-al -ol a-a a-c a-t aaa aac aal aao aar aat ac- aca acc acl aco acr act al- ala alc all alo alr alt aoa aoc aol aoo aor aot ar- ara arc arl aro arr art at- ata atc atl ato atr att c-- caa cac cal cao car cat cca ccc ccl cco ccr cct cl- cla clc cll clo clr clt co- coa coc col coo cor cot cra crc crl cro crr crt cta ctc ctl cto ctr ctt la- laa lac lal lao lar lat lca lcc lcl lco lcr lct lla llc lll llo llr llt loa loc lol loo lor lot lra lrc lro lrr lrt lta ltc ltl lto ltr ltt oaa oac oal oao oar oat oc- oca occ ocl oco ocr oct ola olc oll olo olt oo- ooa ooc ool ooo oor oot or- ora orc orl oro orr ort ot- ota otc otl oto otr ott ra- raa rac ral rao rar rat rca rcc rcl rco rcr rct rla rlc rll rlo rlr rlt roa roc rol roo ror rot rra rrc rrl rrr rrt rta rtc rtl rto rtr rtt taa tac tal tao tar tat tca tcc tcl tco tcr tct tla tlc tll tlo tlr tlt to- toa toc tol too tor tot tra trc trl tro trr trt tta ttc ttl tto ttr ttt