-al -er -ol a-a a-b a-i a-t aaa aab aae aaf aai aal aao aar aas aat ab- aba abb abe abf abi abl abo abr abs abt aea aeb aee aef aei ael aeo aer aes aet af- afa afb afe aff afi afl afo afr afs aft ai- aia aib aie aif aii ail aio air ais ait al- ala alb ale alf ali all alo alr als alt aoa aob aoe aof aoi aol aoo aor aos aot ar- ara arb are arf ari arl aro arr ars art as- asa asb ase asf asi asl aso asr ass ast at- ata atb ate atf ati atl ato atr ats att baa bab bae baf bai bal bao bar bas bat bba bbb bbe bbf bbi bbl bbo bbr bbs bbt be- bea beb bee bef bei bel beo ber bes bet bfa bfb bfe bff bfi bfl bfo bfr bfs bft bi- bia bib bie bif bii bil bio bir bis bit bla blb ble blf bli bll blo blr bls blt boa bob boe bof boi bol boo bor bos bot bra brb bre brf bri brl bro brr brs brt bsa bsb bse bsf bsi bsl bso bsr bss bst bta btb bte btf bti btl bto btr bts btt eaa eab eae eaf eai eal eao ear eas eat eba ebb ebe ebf ebi ebl ebo ebr ebs ebt eea eeb eee eef eel eeo eer ees eet ef- efa efb efe eff efi efl efo efr efs eft eia eib eie eif eii eil eio eir eis eit ela elb ele elf eli ell elo elr els elt eo- eoa eob eoe eof eoi eol eoo eor eos eot era erb ere erf eri erl ero err ers ert es- esa esb ese esf esi esl eso esr ess est eta etb ete etf eti etl eto etr ets ett faa fab fae faf fai fal fao far fas fat fba fbb fbe fbf fbi fbl fbo fbr fbs fbt fea feb fee fef fei fel feo fer fes fet ffa ffe fff ffi ffl ffo ffr ffs fft fia fib fie fif fii fil fir fis fit fla flb fle flf fli fll flo flr fls flt foa fob foe fof foi fol foo for fos fot fra frb fre frf fri frl fro frr frs frt fsa fsb fse fsf fsi fsl fso fsr fss fst fta ftb fte ftf fti ftl fto ftr fts ftt i-f ia- iaa iab iae iaf iai ial iao iar ias iat iba ibb ibe ibf ibi ibl ibo ibr ibs ibt ie- iea iee ief iei iel ier ies iet ifa ifb ife iff ifi ifl ifo ifr ifs ift iia iib iie iif iii iil iio iir iis iit il- ila ilb ile ilf ili ill ilo ilr ils ilt io- ioa iob ioe iof ioi iol ioo ior ios iot ir- ira irb ire irf iri irl iro irr irs irt is- isa isb ise isf isi isl iso isr iss ist ita itb ite itf iti itl ito its itt la- laa lab lae laf lai lal lao lar las lat lba lbb lbe lbf lbi lbl lbo lbr lbs lbt lea leb lee lef lei lel leo ler les let lfa lfb lfe lff lfi lfl lfo lfr lfs lft lia lib lie lif lii lil lio lir lis lit lla llb lle llf lli lll llo llr lls llt loa lob loe lof loi lol loo lor los lot lra lrb lrf lri lro lrr lrs lrt lsa lsb lse lsf lsi lsl lso lsr lss lst lta ltb lte ltf lti ltl lto ltr lts ltt o-i oaa oab oae oaf oai oal oao oar oas oat ob- oba obb obe obf obi obl obo obr obs obt oea oeb oee oef oei oel oeo oer oes oet of- ofa ofb ofe off ofi ofl ofo ofr ofs oft oia oib oie oif oii oil oio oir ois oit ola olb ole olf oli oll olo ols olt oo- ooa oob oof ooi ool ooo oor oos oot or- ora orb ore orf ori orl oro orr ors ort os- osa osb ose osf osi osl oso osr oss ost ot- ota otb ote otf oti otl oto otr ots ott ra- raa rab rae raf rai ral rao rar ras rat rba rbb rbe rbf rbi rbl rbo rbr rbs rbt re- rea reb ree ref rei rel reo rer res ret rfa rfb rfe rff rfi rfl rfo rfr rfs rft ria rib rie rif rii ril rio rir ris rit rla rle rlf rli rll rlo rlr rls rlt roa rob roe rof roi rol roo ror ros rot rra rrb rrf rri rrl rrr rrs rrt rsa rsb rse rsf rsi rsl rso rsr rss rst rta rtb rte rtf rti rtl rto rtr rts rtt saa sab sae saf sai sal sao sar sas sat sba sbb sbe sbf sbi sbl sbo sbr sbs sbt se- sea seb see sef sei sel seo ser ses set sfa sfb sfe sff sfi sfl sfo sfr sfs sft sia sib sie sif sii sil sio sir sis sit sla slb sle slf sli sll slo slr sls slt soa sob soe sof soi sol soo sor sos sot sr- sra srb sre srf sri srl sro srr srs srt ss- ssa ssb sse ssf ssi ssl sso ssr sss sst sta stb ste stf sti stl sto str sts stt taa tab tae taf tai tal tao tar tas tat tba tbb tbe tbf tbi tbl tbo tbr tbs tbt te- tea teb tee tef tei tel teo ter tes tet tfa tfb tfe tff tfi tfl tfo tfr tfs tft tia tib tie tif tii til tio tir tis tit tla tle tlf tli tll tlo tlr tls tlt to- toa tob toe tof toi tol too tor tos tot tra trb tre