-al a-a a-c a-t aaa aac aal aar aas aat ac- aca acc acl acr acs act al- ala alc all alr als alt ar- ara arc arl arr ars art as- asa asc asl asr ass ast at- ata atc atl atr ats att c-- caa cac cal car cas cat cca ccc ccl ccr ccs cct cl- cla clc cll clr cls clt cra crc crl crr crs crt csa csc csl csr css cst cta ctc ctl ctr cts ctt la- laa lac lal lar las lat lca lcc lcl lcr lcs lct lla llc lll llr lls llt lra lrc lrr lrs lrt lsa lsc lsl lsr lss lst lta ltc ltl ltr lts ltt ra- raa rac ral rar ras rat rca rcc rcl rcr rcs rct rla rlc rll rlr rls rlt rra rrc rrl rrr rrs rrt rsa rsc rsl rsr rss rst rta rtc rtl rtr rts rtt saa sac sal sar sas sat sca scc scl scr scs sct sla slc sll slr sls slt sr- sra src srl srr srs srt ss- ssa ssc ssl ssr sss sst sta stc stl str sts stt taa tac tal tar tas tat tca tcc tcl tcr tcs tct tla tlc tll tlr tls tlt tra trc trl trr trs trt tsa tsc tsl tsr tss tst tta ttc ttl ttr tts ttt