-al a-a a-b a-t aaa aab aal aap aas aat ab- aba abb abl abp abs abt al- ala alb all alp als alt ap- apa apb apl app aps apt as- asa asb asl asp ass ast at- ata atb atl atp ats att b-p baa bab bal bap bas bat bba bbb bbl bbp bbs bbt bla blb bll blp bls blt bpa bpb bpl bpp bps bpt bsa bsb bsl bsp bss bst bta btb btl btp bts btt l-p la- laa lab lal lap las lat lba lbb lbl lbp lbs lbt lla llb lll llp lls llt lpa lpb lpl lpp lps lpt lsa lsb lsl lsp lss lst lta ltb ltl ltp lts ltt p-p paa pab pal pap pas pat pba pbb pbl pbp pbs pbt pla plb pll plp pls plt ppa ppb ppl ppp pps ppt ps- psa psb psl psp pss pst pt- pta ptb ptl ptp pts ptt saa sab sal sap sas sat sba sbb sbl sbp sbs sbt sla slb sll slp sls slt spa spb spl spp sps spt ss- ssa ssb ssl ssp sss sst sta stb stl stp sts stt taa tab tal tap tas tat tba tbb tbl tbp tbs tbt tla tll tlp tls tlt tpa tpb tpl tpp tps tpt tsa tsb tsl tsp tss tst tta ttb ttl ttp tts ttt