-al a-a a-b a-i aaa aab aae aai aak aal aap aas ab- aba abb abe abi abk abl abp abs aea aeb aee aei aek ael aep aes ai- aia aib aie aii aik ail aip ais aka akb ake aki akk akl akp aks al- ala alb ale ali alk all alp als ap- apa apb ape api apk apl app aps as- asa asb ase asi ask asl asp ass b-p baa bab bae bai bak bal bap bas bba bbb bbe bbi bbk bbl bbp bbs be- bea beb bee bei bek bel bep bes bi- bia bib bie bii bik bil bip bis bka bkb bke bkk bkl bkp bks bla blb ble bli blk bll blp bls bpa bpb bpe bpi bpl bpp bps bsa bsb bse bsi bsk bsl bsp bss eaa eab eae eai eak eal eap eas eba ebb ebe ebi ebk ebl ebp ebs eea eeb eee eek eel eep ees eia eib eie eii eik eil eip eis eka ekb eke eki ekl ekp eks ela elb ele eli elk ell elp els ep- epa epb epe epi epl epp eps es- esa esb ese esi esk esl esp ess ia- iaa iab iae iai ial iap ias iba ibb ibe ibi ibk ibl ibp ibs ie- iea iee iei iek iel iep ies iia iib iie iii iil iip iis ika ikb ike iki ikk ikl iks il- ila ilb ile ili ilk ill ilp ils ipa ipb ipe ipi ipl ipp ips is- isa isb ise isi isk isl isp iss ka- kaa kab kae kai kak kal kap kas kba kbb kbe kbi kbk kbl kbp kbs ke- kea keb kee kei kek kel kep kes kia kib kie kii kik kil kip kis kkb kke kki kkk kkl kkp kks kl- kla klb kli kls kpa kpe kpi kpk kpl kpp kps ksa ksb kse ksi ksk ksl ksp kss l-p la- laa lab lae lai lak lal lap las lba lbb lbe lbi lbk lbl lbp lbs lea leb lee lei lek lel lep les lia lib lie lii lik lil lip lis lka lkb lkl lkp lks lla llb lle lli llk lll llp lls lpa lpb lpe lpi lpk lpl lpp lps lsa lsb lse lsi lsk lsl lsp lss p-p paa pab pae pai pak pal pap pas pba pbb pbe pbi pbk pbl pbp pbs pea peb pee pei pek pel pep pes pia pib pie pii pik pil pip pis pka pkb pke pki pkl pkp pks pla plb ple pli plk pll plp pls ppa ppb ppe ppi ppk ppl ppp pps ps- psa psb pse psi psk psl psp pss saa sab sae sai sak sal sap sas sba sbb sbe sbi sbk sbl sbp sbs se- sea seb see sei sek sel sep ses sia sib sie sii sik sil sip sis sk- ska skb ske ski skk skl skp sks sla slb sle sli slk sll slp sls spa spb spe spi spk spl spp sps ss- ssa ssb sse ssi ssk ssl ssp sss