-al -ol a-a a-b a-i aaa aab aaf aai aal aao aar aas aau ab- aba abb abf abi abl abo abr abs abu af- afa afb aff afi afl afo afr afs afu ai- aia aib aif aii ail aio air ais aiu al- ala alb alf ali all alo alr als alu aoa aob aof aoi aol aoo aor aos aou ar- ara arb arf ari arl aro arr ars aru as- asa asb asf asi asl aso asr ass asu au- aua aub auf aui aul auo aur aus b-u baa bab baf bai bal bao bar bas bau bba bbb bbf bbi bbl bbo bbr bbs bbu bfa bfb bff bfi bfl bfo bfr bfs bfu bi- bia bib bif bii bil bio bir bis biu bla blb blf bli bll blo blr bls blu boa bob bof boi bol boo bor bos bou bra brb brf bri brl bro brr brs bru bsa bsb bsf bsi bsl bso bsr bss bsu bua bub buf bui bul buo bur bus buu faa fab faf fai fal fao far fas fau fba fbb fbf fbi fbl fbo fbr fbs fbu ffa fff ffi ffl ffo ffr ffs ffu fia fib fif fii fil fir fis fiu fla flb flf fli fll flo flr fls flu foa fob fof foi fol foo for fos fou fra frb frf fri frl fro frr frs fru fsa fsb fsf fsi fsl fso fsr fss fsu fua fub fuf fui ful fuo fur fus fuu i-f ia- iaa iab iaf iai ial iao iar ias iau iba ibb ibf ibi ibl ibo ibr ibs ibu ifa ifb iff ifi ifl ifo ifr ifs ifu iia iib iif iii iil iio iir iis iiu il- ila ilb ilf ili ill ilo ilr ils ilu io- ioa iob iof ioi iol ioo ior ios iou ir- ira irb irf iri irl iro irr irs iru is- isa isb isf isi isl iso isr iss isu iu- iua iub iui iur ius la- laa lab laf lai lal lao lar las lau lba lbb lbf lbi lbl lbo lbr lbs lbu lfa lfb lff lfi lfl lfo lfr lfs lfu lia lib lif lii lil lio lir lis liu lla llb llf lli lll llo llr lls llu loa lob lof loi lol loo lor los lou lra lrb lrf lri lro lrr lrs lru lsa lsb lsf lsi lsl lso lsr lss lsu lua lub luf lui lul luo lur lus luu o-i oaa oab oaf oai oal oao oar oas oau ob- oba obb obf obi obl obo obr obs obu of- ofa ofb off ofi ofl ofo ofr ofs ofu oia oib oif oii oil oio oir ois oiu ola olb olf oli oll olo ols olu oo- ooa oob oof ooi ool ooo oor oos or- ora orb orf ori orl oro orr ors oru os- osa osb osf osi osl oso osr oss osu ou- oua ouf oui oul ouo our ous ra- raa rab raf rai ral rao rar ras rau rba rbb rbf rbi rbl rbo rbr rbs rbu rfa rfb rff rfi rfl rfo rfr rfs rfu ria rib rif rii ril rio rir ris rla rlf rli rll rlo rlr rls rlu roa rob rof roi rol roo ror ros rou rra rrb rrf rri rrl rrr rrs rru rsa rsb rsf rsi rsl rso rsr rss rsu rua rub ruf rui ruo rur rus ruu saa sab saf sai sal sao sar sas sau sba sbb sbf sbi sbl sbo sbr sbs sbu sfa sfb sff sfi sfl sfo sfr sfs sfu sia sib sif sii sil sio sir sis siu sla slb slf sli sll slo slr sls slu soa sob sof soi sol soo sor sos sou sr- sra srb srf sri srl sro srr srs ss- ssa ssb ssf ssi ssl sso ssr sss ssu sua sub suf sui sul suo sur sus suu ua- uaa uab uaf uai ual uao uar uas uau uba ubb ubf ubi ubl ubo ubr ubs ubu ufa uff ufi ufl ufo ufr ufs ufu uia uib uif uii uil uio uir uis uiu ula ulb ulf uli ull ulo ulr uls ulu uoa uob uol uoo uor uos ur- ura urb urf uri url uro urr urs uru usa usb usf usi usl uso usr uss usu uua uur uus uuu