-al -ol a-a a-b a-c a-t aaa aab aac aaf aal aan aao aar aas aat aau ab- aba abb abc abf abl abn abo abr abs abt abu ac- aca acb acc acf acl acn aco acr acs act acu af- afa afb afc aff afl afn afo afr afs aft afu al- ala alb alc alf all aln alo alr als alt alu an- ana anb anc anf anl ann ano anr ans ant anu aoa aob aoc aof aol aon aoo aor aos aot aou ar- ara arb arc arf arl arn aro arr ars art aru as- asa asb asc asf asl asn aso asr ass ast asu at- ata atb atc atf atl atn ato atr ats att atu au- aua aub auc auf aul aun auo aur aus aut b-u baa bab bac baf bal ban bao bar bas bat bau bba bbb bbc bbf bbl bbn bbo bbr bbs bbt bbu bca bcb bcc bcf bcl bcn bco bcr bcs bct bcu bfa bfb bfc bff bfl bfn bfo bfr bfs bft bfu bla blb blc blf bll bln blo blr bls blt blu bna bnb bnc bnf bnl bnn bno bnr bns bnt bnu boa bob boc bof bol bon boo bor bos bot bou bra brb brf brl brn bro brr brs brt bru bsa bsb bsc bsf bsl bsn bso bsr bss bst bsu bta btb btc btf btl btn bto btr bts btt btu bua bub buc buf bul bun buo bur bus but buu c-- caa cab cac caf cal can cao car cas cat cau cba cbb cbc cbf cbl cbn cbo cbr cbs cbt cbu cca ccb ccc ccf ccl ccn cco ccr ccs cct ccu cfa cfb cfc cff cfl cfn cfo cfr cfs cft cfu cl- cla clb clc clf cll cln clo clr cls clt clu cn- cna cnb cnc cnf cnl cnn cno cnr cns cnt cnu co- coa cob coc cof col con coo cor cos cot cou cra crb crc crf crl crn cro crr crs crt cru csa csb csc csf csl csn cso csr css cst csu cta ctb ctc ctf ctl ctn cto ctr cts ctt ctu cua cub cuc cuf cul cun cuo cur cus cut cuu faa fab fac faf fal fan fao far fas fat fau fba fbb fbc fbf fbl fbn fbo fbr fbs fbt fbu fca fcb fcc fcf fcl fcn fco fcr fcs fct fcu ffa ffc fff ffl ffn ffo ffr ffs fft ffu fla flb flc flf fll fln flo flr fls flt flu fna fnb fnc fnf fnl fnn fnr fns fnt fnu foa fob foc fof fol fon foo for fos fot fou fra frb frc frf frl frn fro frr frs frt fru fsa fsb fsc fsf fsl fsn fso fsr fss fst fsu fta ftb ftc ftf ftl ftn fto ftr fts ftt ftu fua fub fuf ful fun fuo fur fus fut fuu la- laa lab lac laf lal lan lao lar las lat lau lba lbb lbc lbf lbl lbo lbr lbs lbt lbu lca lcb lcc lcf lcl lcn lco lcr lcs lct lcu lfa lfb lfc lff lfl lfn lfo lfr lfs lft lfu lla llb llc llf lll lln llo llr lls llt llu lna lnb lnc lnl lnn lno lnr lns lnt lnu loa lob loc lof lol lon loo lor los lot lou lra lrb lrc lrf lrn lro lrr lrs lrt lru lsa lsb lsc lsf lsl lsn lso lsr lss lst lsu lta ltb ltc ltf ltl lto ltr lts ltt ltu lua lub luc luf lul lun luo lur lus lut luu naa nab nac naf nal nan nao nar nas nat nau nba nbb nbc nbf nbl nbn nbo nbr nbs nbt nbu nca ncb ncc ncf ncl ncn nco ncr ncs nct ncu nfa nfb nfc nff nfl nfn nfo nfr nfs nft nfu nla nlb nlc nlf nll nln nlo nlr nls nlt nlu nna nnb nnc nnf nnl nnn nno nns nnt nnu no- noa nob noc nof nol non noo nor nos not nou nra nrb nrc nrf nrl nrn nro nrr nrs nrt nru nsa nsb nsc nsf nsl nsn nso nsr nss nst nsu nta ntb ntc ntf ntn nto ntr nts ntt ntu nua nub nuc nul nun nuo nur nus nut nuu oaa oab oac oaf oal oan oao oar oas oat oau ob- oba obb obc obf obl obn obo obr obs obt obu oc- oca ocb occ ocf ocl ocn oco ocr ocs oct ocu of- ofa ofb ofc off ofl ofn ofo ofr ofs oft ofu ola olb olc olf oll oln olo ols olt olu on- ona onb onc onf onl onn ono onr ons ont onu oo- ooa oob ooc oof ool oon ooo oor oos oot or- ora orb orc orf orl orn oro orr ors ort oru os- osa osb osc osf osl osn oso osr oss ost osu ot- ota otb otc otf otl otn oto otr ots ott otu ou- oua ouc ouf oul oun ouo our ous out ra- raa rab rac raf ral ran rao rar ras rat rau rba rbb rbc rbf rbl rbn rbo rbr rbs rbt rbu rca rcb rcc rcf rcl rcn rco rcr rcs rct rcu rfa rfb rfc rff rfl rfn rfo rfr rfs rft rfu rla rlc rlf rll rln rlo rlr rls rlt rlu rna rnb rnc rnn rno rnr rns rnt rnu roa rob roc rof rol ron roo ror ros rot rou rra rrb rrc rrf rrl rrn rrr rrs rrt rru rsa rsb rsc rsf rsl rsn rso rsr rss rst rsu rta rtb rtc rtf rtl rtn rto rtr rts rtt rtu rua rub ruc ruf run ruo rur rus rut ruu saa sab sac saf sal san sao sar sas sat sau sba sbb sbc sbf sbl sbn sbo sbr sbs sbt