-al -ol a-a a-b a-i a-t aaa aab aaf aai aal aan aao aar aat ab- aba abb abf abi abl abn abo abr abt af- afa afb aff afi afl afn afo afr aft ai- aia aib aif aii ail ain aio air ait al- ala alb alf ali all aln alo alr alt an- ana anb anf ani anl ann ano anr ant aoa aob aof aoi aol aon aoo aor aot ar- ara arb arf ari arl arn aro arr art at- ata atb atf ati atl atn ato atr att baa bab baf bai bal ban bao bar bat bba bbb bbf bbi bbl bbn bbo bbr bbt bfa bfb bff bfi bfl bfn bfo bfr bft bi- bia bib bif bii bil bin bio bir bit bla blb blf bli bll bln blo blr blt bna bnb bnf bni bnl bnn bno bnr bnt boa bob bof boi bol bon boo bor bot bra brb brf bri brl brn bro brr brt bta btb btf bti btl btn bto btr btt faa fab faf fai fal fan fao far fat fba fbb fbf fbi fbl fbn fbo fbr fbt ffa fff ffi ffl ffn ffo ffr fft fia fib fif fii fil fin fir fit fla flb flf fli fll fln flo flr flt fna fnb fnf fni fnl fnn fnr fnt foa fob fof foi fol fon foo for fot fra frb frf fri frl frn fro frr frt fta ftb ftf fti ftl ftn fto ftr ftt i-f ia- iaa iab iaf iai ial ian iao iar iat iba ibb ibf ibi ibl ibn ibo ibr ibt ifa ifb iff ifi ifl ifn ifo ifr ift iia iib iif iii iil iin iio iir iit il- ila ilb ilf ili ill iln ilo ilr ilt in- ina inb inf ini inl inn ino inr int io- ioa iob iof ioi iol ion ioo ior iot ir- ira irb irf iri irl irn iro irr irt ita itb itf iti itl itn ito itt la- laa lab laf lai lal lan lao lar lat lba lbb lbf lbi lbl lbo lbr lbt lfa lfb lff lfi lfl lfn lfo lfr lft lia lib lif lii lil lin lio lir lit lla llb llf lli lll lln llo llr llt lna lnb lni lnl lnn lno lnr lnt loa lob lof loi lol lon loo lor lot lra lrb lrf lri lrn lro lrr lrt lta ltb ltf lti ltl lto ltr ltt n-i naa nab naf nai nal nan nao nar nat nba nbb nbf nbi nbl nbn nbo nbr nbt nfa nfb nff nfi nfl nfn nfo nfr nft nia nib nif nii nil nin nio nir nit nla nlb nlf nli nll nln nlo nlr nlt nna nnb nnf nni nnl nnn nno nnt no- noa nob nof noi nol non noo nor not nra nrb nrf nri nrl nrn nro nrr nrt nta ntb ntf nti ntn nto ntr ntt o-i oaa oab oaf oai oal oan oao oar oat ob- oba obb obf obi obl obn obo obr obt of- ofa ofb off ofi ofl ofn ofo ofr oft oia oib oif oii oil oin oio oir oit ola olb olf oli oll oln olo olt on- ona onb onf oni onl onn ono onr ont oo- ooa oob oof ooi ool oon ooo oor oot or- ora orb orf ori orl orn oro orr ort ot- ota otb otf oti otl otn oto otr ott ra- raa rab raf rai ral ran rao rar rat rba rbb rbf rbi rbl rbn rbo rbr rbt rfa rfb rff rfi rfl rfn rfo rfr rft ria rib rif rii ril rin rio rir rit rla rlf rli rll rln rlo rlr rlt rna rnb rni rnn rno rnr rnt roa rob rof roi rol ron roo ror rot rra rrb rrf rri rrl rrn rrr rrt rta rtb rtf rti rtl rtn rto rtr rtt taa tab taf tai tal tan tao tar tat tba tbb tbf tbi tbl tbn tbo tbr tbt tfa tfb tff tfi tfl tfn tfo tfr tft tia tib tif tii til tin tio tir tit tla tlf tli tll tln tlo tlr tlt tna tnb tnf tni tnl tnn tno tnr tnt to- toa tob tof toi tol ton too tor tot tra trb trf tri trl trn tro trr trt tta ttb ttf tti ttl ttn tto ttr ttt