-al -ol a-a a-b a-c a-t aaa aab aac aal aan aao aat aau ab- aba abb abc abl abn abo abt abu ac- aca acb acc acl acn aco act acu al- ala alb alc all aln alo alt alu an- ana anb anc anl ann ano ant anu aoa aob aoc aol aon aoo aot aou at- ata atb atc atl atn ato att atu au- aua aub auc aul aun auo aut b-u baa bab bac bal ban bao bat bau bba bbb bbc bbl bbn bbo bbt bbu bca bcb bcc bcl bcn bco bct bcu bla blb blc bll bln blo blt blu bna bnb bnc bnl bnn bno bnt bnu boa bob boc bol bon boo bot bou bta btb btc btl btn bto btt btu bua bub buc bul bun buo but buu c-- caa cab cac cal can cao cat cau cba cbb cbc cbl cbn cbo cbt cbu cca ccb ccc ccl ccn cco cct ccu cl- cla clb clc cll cln clo clt clu cn- cna cnb cnc cnl cnn cno cnt cnu co- coa cob coc col con coo cot cou cta ctb ctc ctl ctn cto ctt ctu cua cub cuc cul cun cuo cut cuu la- laa lab lac lal lan lao lat lau lba lbb lbc lbl lbo lbt lbu lca lcb lcc lcl lcn lco lct lcu lla llb llc lll lln llo llt llu lna lnb lnc lnl lnn lno lnt lnu loa lob loc lol lon loo lot lou lta ltb ltc ltl lto ltt ltu lua lub luc lul lun luo lut luu naa nab nac nal nan nao nat nau nba nbb nbc nbl nbn nbo nbt nbu nca ncb ncc ncl ncn nco nct ncu nla nlb nlc nll nln nlo nlt nlu nna nnb nnc nnl nnn nno nnt nnu no- noa nob noc nol non noo not nou nta ntb ntc ntn nto ntt ntu nua nub nuc nul nun nuo nut nuu oaa oab oac oal oan oao oat oau ob- oba obb obc obl obn obo obt obu oc- oca ocb occ ocl ocn oco oct ocu ola olb olc oll oln olo olt olu on- ona onb onc onl onn ono ont onu oo- ooa oob ooc ool oon ooo oot ot- ota otb otc otl otn oto ott otu ou- oua ouc oul oun ouo out taa tab tac tal tan tao tat tau tba tbb tbc tbl tbn tbo tbt tbu tca tcb tcc tcl tcn tco tct tcu tla tlc tll tln tlo tlt tlu tna tnb tnc tnl tnn tno tnt to- toa tob toc tol ton too tot tou tta ttb ttc ttl ttn tto ttt ttu tua tub tuc tul tun tuo tut tuu ua- uaa uab uac ual uan uao uat uau uba ubb ubc ubl ubn ubo ubt ubu uca ucb ucc ucl ucn uco uct ucu ula ulb ulc ull uln ulo ult ulu un- una unb unc unl unn uno unt unu uoa uob uoc uol uon uoo uot uta utb utc utl utn uto utt utu uua uuc uun uut uuu