-al -ol a-a a-b a-c a-t aaa aab aac aal aao aat aau ab- aba abb abc abl abo abt abu ac- aca acb acc acl aco act acu al- ala alb alc all alo alt alu aoa aob aoc aol aoo aot aou at- ata atb atc atl ato att atu au- aua aub auc aul auo aut b-u baa bab bac bal bao bat bau bba bbb bbc bbl bbo bbt bbu bca bcb bcc bcl bco bct bcu bla blb blc bll blo blt blu boa bob boc bol boo bot bou bta btb btc btl bto btt btu bua bub buc bul buo but buu c-- caa cab cac cal cao cat cau cba cbb cbc cbl cbo cbt cbu cca ccb ccc ccl cco cct ccu cl- cla clb clc cll clo clt clu co- coa cob coc col coo cot cou cta ctb ctc ctl cto ctt ctu cua cub cuc cul cuo cut cuu la- laa lab lac lal lao lat lau lba lbb lbc lbl lbo lbt lbu lca lcb lcc lcl lco lct lcu lla llb llc lll llo llt llu loa lob loc lol loo lot lou lta ltb ltc ltl lto ltt ltu lua lub luc lul luo lut luu oaa oab oac oal oao oat oau ob- oba obb obc obl obo obt obu oc- oca ocb occ ocl oco oct ocu ola olb olc oll olo olt olu oo- ooa oob ooc ool ooo oot ot- ota otb otc otl oto ott otu ou- oua ouc oul ouo out taa tab tac tal tao tat tau tba tbb tbc tbl tbo tbt tbu tca tcb tcc tcl tco tct tcu tla tlc tll tlo tlt tlu to- toa tob toc tol too tot tou tta ttb ttc ttl tto ttt ttu tua tub tuc tul tuo tut tuu ua- uaa uab uac ual uao uat uau uba ubb ubc ubl ubo ubt ubu uca ucb ucc ucl uco uct ucu ula ulb ulc ull ulo ult ulu uoa uob uoc uol uoo uot uta utb utc utl uto utt utu uua uuc uut uuu