-al a-a a-b a-i a-t aaa aab aaf aai aal aar aas aat ab- aba abb abf abi abl abr abs abt af- afa afb aff afi afl afr afs aft ai- aia aib aif aii ail air ais ait al- ala alb alf ali all alr als alt ar- ara arb arf ari arl arr ars art as- asa asb asf asi asl asr ass ast at- ata atb atf ati atl atr ats att baa bab baf bai bal bar bas bat bba bbb bbf bbi bbl bbr bbs bbt bfa bfb bff bfi bfl bfr bfs bft bi- bia bib bif bii bil bir bis bit bla blb blf bli bll blr bls blt bra brb brf bri brl brr brs brt bsa bsb bsf bsi bsl bsr bss bst bta btb btf bti btl btr bts btt faa fab faf fai fal far fas fat fba fbb fbf fbi fbl fbr fbs fbt ffa fff ffi ffl ffr ffs fft fia fib fif fii fil fir fis fit fla flb flf fli fll flr fls flt fra frb frf fri frl frr frs frt fsa fsb fsf fsi fsl fsr fss fst fta ftb ftf fti ftl ftr fts ftt i-f ia- iaa iab iaf iai ial iar ias iat iba ibb ibf ibi ibl ibr ibs ibt ifa ifb iff ifi ifl ifr ifs ift iia iib iif iii iil iir iis iit il- ila ilb ilf ili ill ilr ils ilt ir- ira irb irf iri irl irr irs irt is- isa isb isf isi isl isr iss ist ita itb itf iti itl its itt la- laa lab laf lai lal lar las lat lba lbb lbf lbi lbl lbr lbs lbt lfa lfb lff lfi lfl lfr lfs lft lia lib lif lii lil lir lis lit lla llb llf lli lll llr lls llt lra lrb lrf lri lrr lrs lrt lsa lsb lsf lsi lsl lsr lss lst lta ltb ltf lti ltl ltr lts ltt ra- raa rab raf rai ral rar ras rat rba rbb rbf rbi rbl rbr rbs rbt rfa rfb rff rfi rfl rfr rfs rft ria rib rif rii ril rir ris rit rla rlf rli rll rlr rls rlt rra rrb rrf rri rrl rrr rrs rrt rsa rsb rsf rsi rsl rsr rss rst rta rtb rtf rti rtl rtr rts rtt saa sab saf sai sal sar sas sat sba sbb sbf sbi sbl sbr sbs sbt sfa sfb sff sfi sfl sfr sfs sft sia sib sif sii sil sir sis sit sla slb slf sli sll slr sls slt sr- sra srb srf sri srl srr srs srt ss- ssa ssb ssf ssi ssl ssr sss sst sta stb stf sti stl str sts stt taa tab taf tai tal tar tas tat tba tbb tbf tbi tbl tbr tbs tbt tfa tfb tff tfi tfl tfr tfs tft tia tib tif tii til tir tis tit tla tlf tli tll tlr tls tlt tra trb trf tri trl trr trs trt tsa tsb tsf tsi tsl tsr tss tst tta ttb ttf tti ttl ttr tts ttt