-al a-a a-b a-i a-t aaa aab aae aai aal aap aat aax ab- aba abb abe abi abl abp abt abx aea aeb aee aei ael aep aet aex ai- aia aib aie aii ail aip ait aix al- ala alb ale ali all alp alt alx ap- apa apb ape api apl app apt apx at- ata atb ate ati atl atp att atx ax- axa axe axi axl axp axt axx b-p baa bab bae bai bal bap bat bax bba bbb bbe bbi bbl bbp bbt bbx be- bea beb bee bei bel bep bet bex bi- bia bib bie bii bil bip bit bix bla blb ble bli bll blp blt blx bpa bpb bpe bpi bpl bpp bpt bpx bta btb bte bti btl btp btt btx bxb bxi bxl bxx eaa eab eae eai eal eap eat eax eba ebb ebe ebi ebl ebp ebt ebx eea eeb eee eel eep eet eex eia eib eie eii eil eip eit eix ela elb ele eli ell elp elt elx ep- epa epb epe epi epl epp ept epx eta etb ete eti etl etp ett etx ex- exa exe exi exl exp ext exx ia- iaa iab iae iai ial iap iat iba ibb ibe ibi ibl ibp ibt ibx ie- iea iee iei iel iep iet iex iia iib iie iii iil iip iit iix il- ila ilb ile ili ill ilp ilt ilx ipa ipb ipe ipi ipl ipp ipt ipx ita itb ite iti itl itp itt itx ixe ixi ixl l-p la- laa lab lae lai lal lap lat lax lba lbb lbe lbi lbl lbp lbt lbx lea leb lee lei lel lep let lex lia lib lie lii lil lip lit lix lla llb lle lli lll llp llt lpa lpb lpe lpi lpl lpp lpt lpx lta ltb lte lti ltl ltp ltt ltx lxi lxx p-p paa pab pae pai pal pap pat pax pba pbb pbe pbi pbl pbp pbt pbx pea peb pee pei pel pep pet pex pia pib pie pii pil pip pit pix pla plb ple pli pll plp plt plx ppa ppb ppe ppi ppl ppp ppt ppx pt- pta ptb pte pti ptl ptp ptt ptx pxe pxl pxt t-x taa tab tae tai tal tap tat tax tba tbb tbe tbi tbl tbp tbt te- tea teb tee tei tel tep tet tex tia tib tie tii til tip tit tix tla tle tli tll tlp tlt tlx tpa tpb tpe tpi tpl tpp tpt tpx tta ttb tte tti ttl ttp ttt ttx txe txi txl txt xaa xal xap xat xbe xbl xbx xee xel xep xet xex xia xie xii xit xix xla xlb xli xlt xpa xpb xpe xpl xpp xpt xti xtp xtx xxi xxl xxp xxx