-al -er a-a a-b a-i a-t aaa aab aae aai aal aap aar aat aax ab- aba abb abe abi abl abp abr abt abx aea aeb aee aei ael aep aer aet aex ai- aia aib aie aii ail aip air ait aix al- ala alb ale ali all alp alr alt alx ap- apa apb ape api apl app apr apt apx ar- ara arb are ari arl arp arr art arx at- ata atb ate ati atl atp atr att atx ax- axa axe axi axl axp axr axt axx b-p baa bab bae bai bal bap bar bat bax bba bbb bbe bbi bbl bbp bbr bbt bbx be- bea beb bee bei bel bep ber bet bex bi- bia bib bie bii bil bip bir bit bix bla blb ble bli bll blp blr blt blx bpa bpb bpe bpi bpl bpp bpr bpt bpx bra brb bre bri brl brp brr brt brx bta btb bte bti btl btp btr btt btx bxb bxi bxl bxx eaa eab eae eai eal eap ear eat eax eba ebb ebe ebi ebl ebp ebr ebt ebx eea eeb eee eel eep eer eet eex eia eib eie eii eil eip eir eit eix ela elb ele eli ell elp elr elt elx ep- epa epb epe epi epl epp epr ept epx era erb ere eri erl erp err ert eta etb ete eti etl etp etr ett etx ex- exa exe exi exl exp exr ext exx ia- iaa iab iae iai ial iap iar iat iba ibb ibe ibi ibl ibp ibr ibt ibx ie- iea iee iei iel iep ier iet iex iia iib iie iii iil iip iir iit iix il- ila ilb ile ili ill ilp ilr ilt ilx ipa ipb ipe ipi ipl ipp ipr ipt ipx ir- ira irb ire iri irl irp irr irt irx ita itb ite iti itl itp itt itx ixe ixi ixl l-p la- laa lab lae lai lal lap lar lat lax lba lbb lbe lbi lbl lbp lbr lbt lbx lea leb lee lei lel lep ler let lex lia lib lie lii lil lip lir lit lix lla llb lle lli lll llp llr llt lpa lpb lpe lpi lpl lpp lpr lpt lpx lra lrb lri lrp lrr lrt lta ltb lte lti ltl ltp ltr ltt ltx lxi lxr lxx p-p paa pab pae pai pal pap par pat pax pba pbb pbe pbi pbl pbp pbr pbt pbx pea peb pee pei pel pep per pet pex pia pib pie pii pil pip pir pit pix pla plb ple pli pll plp plr plt plx ppa ppb ppe ppi ppl ppp ppr ppt ppx pra prb pre pri prl prp prr prt prx pt- pta ptb pte pti ptl ptp ptr ptt ptx pxe pxl pxr pxt ra- raa rab rae rai ral rap rar rat rax rba rbb rbe rbi rbl rbp rbr rbt rbx re- rea reb ree rei rel rep rer ret rex ria rib rie rii ril rip rir rit rix rla rle rli rll rlp rlr rlt rpa rpb rpe rpi rpl rpp rpr rpt rpx rra rrb rri rrl rrp rrr rrt rta rtb rte rti rtl rtp rtr rtt rtx rxp rxr t-x taa tab tae tai tal tap tar tat tax tba tbb tbe tbi tbl tbp tbr tbt te- tea teb tee tei tel tep ter tet tex tia tib tie tii til tip tir tit tix tla tle tli tll tlp tlr tlt tlx tpa tpb tpe tpi tpl tpp tpr tpt tpx tra trb tre tri trl trp trr trt trx tta ttb tte tti ttl ttp ttr ttt ttx txe txi txl txt xaa xal xap xar xat xbe xbl xbr xbx xee xel xep xer xet xex xia xie xii xit xix xla xlb xli xlr xlt xpa xpb xpe xpl xpp xpt xrt xrx xti xtp xtr xtx xxi xxl xxp xxx