PR82-PR84 have flags for two Grenadier battalions.

In 1814 the Grenadier battalions were formed into two 'Garde Grenadier ' Regiments:
Leib Grenadier Battalion + 1st Battalion Kaiser Alexander Garde Grenadier Regiment
1st East Prussian Grenadiers + 2nd Battalion Kaiser Alexander Garde Grenadier Regiment
2nd East Prussian Grenadiers + Fusilier Battalion Kaiser Alexander Garde Grenadier Regiment
Pommeranian Grenadiers + 1st Battalion Kaiser Franz Garde Grenadier Regiment
West Prussian Grenadiers + 2nd Battalion Kaiser Franz Garde Grenadier Regiment
Silesian Grenadiers + Fusilier Battalion Kaiser Franz Garde Grenadier Regiment

PR71 1st (1st East Prussian) Regiment, 1st & 2nd Battalions
PR72 2nd (1st Pommeranian) Regiment, 1st & 2nd Battalions
PR73 3rd (2nd East Prussian) Regiment, 1st & 2nd Battalions
PR74 4th (3rd East Prussian) Regiment, 1st & 2nd Battalions
PR75 5th (4th East Prussian) Regiment, 1st & 2nd Battalions
PR76 6th (1st West Prussian) Regiment, 1st & 2nd Battalions
PR77 7th (2nd West Prussian) Regiment, 1st & 2nd Battalions
PR78 8th (1st Brandenburg) Regiment, 1st & 2nd Battalions
PR79 9th (2nd Pommeranian) Regiment, (Colberg Infantry Regiment) 1st & 2nd Battalions
PR80 10th (1st Silesian) Regiment, 1st & 2nd Battalions
PR81 11th (2nd Silesian) Regiment, 1st & 2nd Battalions
PR82 1st & 2nd East Prussian Grenadier Battalions
PR83 West Prussian & Silesian Grenadier Battalions
PR84 Pommeranian & Leib Grenadier Battalions
PR85 1st Guard Foot Regiment
PR86 2nd Guard Foot Regiment
PR87 Landwehr ( 1 ) black w/ large white cross & nscription
PR88 Landwehr ( 2 ) off-white w/ black cross lined in gold
PR89 East Prussian Landwehr & Reserve Units, Black Eagle on White
PR92 Silesian Landwehr & Reserve Units, Black Eagle on yellow shield
PR93 Pommeranian Landwehr & Reserve Units, Red Griffin
PR94 Brandenburg Landwehr & Reserve Units, Red Eagle
PR95 Westfalian Landwehr & Reserve Units
PR96 Prussian Landwehr & Reserves, black w/ ornate gold cross decoration, black eagle on white centre
PR97 Prussian Landwehr & Reserves, black - large black eagle on white centre shield

PR98 Prussian Landwehr & Reserves, black w/ ornate gold cross decoration, red Brandenburg eagle on white centre
PR99 Prussian Landwehr & Reserves, black - large red Pomeranian Griffin on white centre shield
PRC1 1st & 2nd Dragoons
PRC2 3rd & 4th Dragoons
PRC3 5th & 6th Dragoons
PRL1 Kurmark Landwehr Lance Pennons (24)
PRL2 Pommeranian Landwehr Lance Pennons (24)
PRL3 Neumark Landwehr Lance Pennons (24)
PRL4 Westfalian Landwehr Lance Pennons (24)
PRL5 Elbe Landwehr Lance Pennons 24)
PRL6 Silesian Landwehr Lance Pennons (24)
PRL7 1st West Prussian Uhlan Regt 1808-14, white over blue
PRL8 2nd West Prussian Uhlan Regt 1808-14, white over red
PRL9 3rd West Prussian Uhlan Regt 1808-14, white over yellow
PRL10 Silesian Uhlan Regiment 1808-14, red over blue
PRL11 Brandenburg Uhlan Regiment 1808-14, yellow over blue
PRL12 Freiwilliger Jager, Brandenburg Regiment 1808-14, yellow over green
PRL13 Prussian Uhlan Regiments 1815, black over white

NOTE: Not much is known of the flags carried by the Landwehr and Reserve battalions. There was no official issue to these units, but some, if not all, carried a flag with either the cross or eagle devicein the centre; usually accompanied by a patriotic slogan. It is believed that the Silesian units used their state crest. I have assumed that the Pommeranians and Brandenburgers would have followed this practice. The flags would have been painted or even embroidered by wives and mothers and often presented to the troops by the Mayors of their home towns. There were no regulations to govern them, so each flag would have been an interpretation of the eagle or cross of Prussia.