No twelve-letter words using these letters can be found in any of three large dictionaries. These are the largest Scrabble words that could be found:
apocalypt
nyctalope
Crib
The letters I I C E Y F B do not form an English word. Please check the letters.
Here are some of the words which the letters IPRCAIA can spell;CarpParCarArcAriaRapCrapAirPair
Those letters will spell the word botanical.
fin,bin,tin,nit,box,toxic,fox,not,cot
Those letters will spell the words coral or carol.
Cram
The letters spell the 6 letter word crouch. The letters can be used to spell the 5 letter words couch and occur. They also can be used to spell hour and ouch.
Those letters spell antic.
albacore
keys
secs