-al a-a a-b aaa aab aae aal aap aas ab- aba abb abe abl abp abs aea aeb aee ael aep aes al- ala alb ale all alp als ap- apa apb ape apl app aps as- asa asb ase asl asp ass b-p baa bab bae bal bap bas bba bbb bbe bbl bbp bbs be- bea beb bee bel bep bes bla blb ble bll blp bls bpa bpb bpe bpl bpp bps bsa bsb bse bsl bsp bss eaa eab eae eal eap eas eba ebb ebe ebl ebp ebs eea eeb eee eel eep ees ela elb ele ell elp els ep- epa epb epe epl epp eps es- esa esb ese esl esp ess l-p la- laa lab lae lal lap las lba lbb lbe lbl lbp lbs lea leb lee lel lep les lla llb lle lll llp lls lpa lpb lpe lpl lpp lps lsa lsb lse lsl lsp lss p-p paa pab pae pal pap pas pba pbb pbe pbl pbp pbs pea peb pee pel pep pes pla plb ple pll plp pls ppa ppb ppe ppl ppp pps ps- psa psb pse psl psp pss saa sab sae sal sap sas sba sbb sbe sbl sbp sbs se- sea seb see sel sep ses sla slb sle sll slp sls spa spb spe spl spp sps ss- ssa ssb sse ssl ssp sss