-al -ol a-a a-b a-i a-t aaa aab aai aal aao aap aas aat ab- aba abb abi abl abo abp abs abt ai- aia aib aii ail aio aip ais ait al- ala alb ali all alo alp als alt aoa aob aoi aol aoo aop aos aot ap- apa apb api apl apo app aps apt as- asa asb asi asl aso asp ass ast at- ata atb ati atl ato atp ats att b-p baa bab bai bal bao bap bas bat bba bbb bbi bbl bbo bbp bbs bbt bi- bia bib bii bil bio bip bis bit bla blb bli bll blo blp bls blt boa bob boi bol boo bop bos bot bpa bpb bpi bpl bpo bpp bps bpt bsa bsb bsi bsl bso bsp bss bst bta btb bti btl bto btp bts btt ia- iaa iab iai ial iao iap ias iat iba ibb ibi ibl ibo ibp ibs ibt iia iib iii iil iio iip iis iit il- ila ilb ili ill ilo ilp ils ilt io- ioa iob ioi iol ioo iop ios iot ipa ipb ipi ipl ipo ipp ips ipt is- isa isb isi isl iso isp iss ist ita itb iti itl ito itp its itt l-p la- laa lab lai lal lao lap las lat lba lbb lbi lbl lbo lbp lbs lbt lia lib lii lil lio lip lis lit lla llb lli lll llo llp lls llt loa lob loi lol loo lop los lot lpa lpb lpi lpl lpo lpp lps lpt lsa lsb lsi lsl lso lsp lss lst lta ltb lti ltl lto ltp lts ltt o-i oaa oab oai oal oao oap oas oat ob- oba obb obi obl obo obp obs obt oia oib oii oil oio oip ois oit ola olb oli oll olo olp ols olt oo- ooa oob ooi ool ooo oop oos oot op- opa opb opi opl opo opp ops opt os- osa osb osi osl oso osp oss ost ot- ota otb oti otl oto otp ots ott p-p paa pab pai pal pao pap pas pat pba pbb pbi pbl pbo pbp pbs pbt pia pib pii pil pio pip pis pit pla plb pli pll plo plp pls plt poa pob poi pol poo pop pos pot ppa ppb ppi ppl ppo ppp pps ppt ps- psa psb psi psl pso psp pss pst pt- pta ptb pti ptl pto ptp pts ptt saa sab sai sal sao sap sas sat sba sbb sbi sbl sbo sbp sbs sbt sia sib sii sil sio sip sis sit sla slb sli sll slo slp sls slt soa sob soi sol soo sop sos sot spa spb spi spl spo spp sps spt ss- ssa ssb ssi ssl sso ssp sss sst sta stb sti stl sto stp sts stt taa tab tai tal tao tap tas tat tba tbb tbi tbl tbo tbp tbs tbt tia tib tii til tio tip tis tit tla tli tll tlo tlp tls tlt to- toa tob toi tol too top tos tot tpa tpb tpi tpl tpo tpp tps tpt tsa tsb tsi tsl tso tsp tss tst tta ttb tti ttl tto ttp tts ttt