IC.

Catholic, splenetic, heretic, arithmetic, brick, etc.

ICE.

Ice, dice, mice, nice, price, rice, spice, slice, thrice, trice, splice, advice, entice, vice, device, concise, precise, paradise, sacrifice, etc.

ICHE and ICH, see ITCH.

ICK.

Brick, sick, chick, kick, lick, nick, pick, quick, stick, thick, trick, arithmetic, choleric, catholic, heretic, rhetoric, splenetic, lunatic, politic.

ICT.

Strict, addict, afflict, convict, inflict, contradict, Pict, etc. The preterites and participles of verbs in ICK, etc.

ID.