cccc cccl cchl cclc ccoc cctc cctl cctt chch chlc chlt choc choh chol choo chto chtt cloo clot cltc coch coco coct coho col- coll colo colt cooh cool coot cotc coth coto cott ctol ctot hccc hcch hhcl hhhh hoch hohl hoho hol- holc holh holl holo holt hool hoot hoth hotl hoto hott htcc htoh htol lccc lchc lctl lcto lhhh llcc lllc llll lloc lloo locc loch loco loho loll lolo looc lool loot loth lotl loto lott ltcc lttc occc occt ocht oclc oct- octo ohcc ohho ohoh ohto olcc ollo olot ooho oolo oooh oooo otcl otho oto- otoh otoo otto tccc tch- tchh tcho tctc thch thoo thot tlco toch toco toho tol- toll tolo tolt tooh tool toot totc toth toto tott tttt