-al -ol a-a a-b a-t aaa aab aal aao aap aar aas aat ab- aba abb abl abo abp abr abs abt al- ala alb all alo alp alr als alt aoa aob aol aoo aop aor aos aot ap- apa apb apl apo app apr aps apt ar- ara arb arl aro arp arr ars art as- asa asb asl aso asp asr ass ast at- ata atb atl ato atp atr ats att b-p baa bab bal bao bap bar bas bat bba bbb bbl bbo bbp bbr bbs bbt bla blb bll blo blp blr bls blt boa bob bol boo bop bor bos bot bpa bpb bpl bpo bpp bpr bps bpt bra brb brl bro brp brr brs brt bsa bsb bsl bso bsp bsr bss bst bta btb btl bto btp btr bts btt l-p la- laa lab lal lao lap lar las lat lba lbb lbl lbo lbp lbr lbs lbt lla llb lll llo llp llr lls llt loa lob lol loo lop lor los lot lpa lpb lpl lpo lpp lpr lps lpt lra lrb lro lrp lrr lrs lrt lsa lsb lsl lso lsp lsr lss lst lta ltb ltl lto ltp ltr lts ltt oaa oab oal oao oap oar oas oat ob- oba obb obl obo obp obr obs obt ola olb oll olo olp ols olt oo- ooa oob ool ooo oop oor oos oot op- opa opb opl opo opp opr ops opt or- ora orb orl oro orp orr ors ort os- osa osb osl oso osp osr oss ost ot- ota otb otl oto otp otr ots ott p-p paa pab pal pao pap par pas pat pba pbb pbl pbo pbp pbr pbs pbt pla plb pll plo plp plr pls plt poa pob pol poo pop por pos pot ppa ppb ppl ppo ppp ppr pps ppt pra prb prl pro prp prr prs prt ps- psa psb psl pso psp psr pss pst pt- pta ptb ptl pto ptp ptr pts ptt ra- raa rab ral rao rap rar ras rat rba rbb rbl rbo rbp rbr rbs rbt rla rll rlo rlp rlr rls rlt roa rob rol roo rop ror ros rot rpa rpb rpl rpo rpp rpr rps rpt rra rrb rrl rrp rrr rrs rrt rsa rsb rsl rso rsp rsr rss rst rta rtb rtl rto rtp rtr rts rtt saa sab sal sao sap sar sas sat sba sbb sbl sbo sbp sbr sbs sbt sla slb sll slo slp slr sls slt soa sob sol soo sop sor sos sot spa spb spl spo spp spr sps spt sr- sra srb srl sro srp srr srs srt ss- ssa ssb ssl sso ssp ssr sss sst sta stb stl sto stp str sts stt taa tab tal tao tap tar tas tat tba tbb tbl tbo tbp tbr tbs tbt tla tll tlo tlp tlr tls tlt to- toa tob tol too top tor tos tot tpa tpb tpl tpo tpp tpr tps tpt tra trb trl tro trp trr trs trt tsa tsb tsl tso tsp tsr tss tst tta ttb ttl tto ttp ttr tts ttt