-al -ol a-a a-b a-i aaa aab aaf aai aal aan aao aar ab- aba abb abf abi abl abn abo abr af- afa afb aff afi afl afn afo afr ai- aia aib aif aii ail ain aio air al- ala alb alf ali all aln alo alr an- ana anb anf ani anl ann ano anr aoa aob aof aoi aol aon aoo aor ar- ara arb arf ari arl arn aro arr baa bab baf bai bal ban bao bar bba bbb bbf bbi bbl bbn bbo bbr bfa bfb bff bfi bfl bfn bfo bfr bi- bia bib bif bii bil bin bio bir bla blb blf bli bll bln blo blr bna bnb bnf bni bnl bnn bno bnr boa bob bof boi bol bon boo bor bra brb brf bri brl brn bro brr faa fab faf fai fal fan fao far fba fbb fbf fbi fbl fbn fbo fbr ffa fff ffi ffl ffn ffo ffr fia fib fif fii fil fin fir fla flb flf fli fll fln flo flr fna fnb fnf fni fnl fnn fnr foa fob fof foi fol fon foo for fra frb frf fri frl frn fro frr i-f ia- iaa iab iaf iai ial ian iao iar iba ibb ibf ibi ibl ibn ibo ibr ifa ifb iff ifi ifl ifn ifo ifr iia iib iif iii iil iin iio iir il- ila ilb ilf ili ill iln ilo ilr in- ina inb inf ini inl inn ino inr io- ioa iob iof ioi iol ion ioo ior ir- ira irb irf iri irl irn iro irr la- laa lab laf lai lal lan lao lar lba lbb lbf lbi lbl lbo lbr lfa lfb lff lfi lfl lfn lfo lfr lia lib lif lii lil lin lio lir lla llb llf lli lll lln llo llr lna lnb lni lnl lnn lno lnr loa lob lof loi lol lon loo lor lra lrb lrf lri lrn lro lrr n-i naa nab naf nai nal nan nao nar nba nbb nbf nbi nbl nbn nbo nbr nfa nfb nff nfi nfl nfn nfo nfr nia nib nif nii nil nin nio nir nla nlb nlf nli nll nln nlo nlr nna nnb nnf nni nnl nnn nno no- noa nob nof noi nol non noo nor nra nrb nrf nri nrl nrn nro nrr o-i oaa oab oaf oai oal oan oao oar ob- oba obb obf obi obl obn obo obr of- ofa ofb off ofi ofl ofn ofo ofr oia oib oif oii oil oin oio oir ola olb olf oli oll oln olo on- ona onb onf oni onl onn ono onr oo- ooa oob oof ooi ool oon ooo oor or- ora orb orf ori orl orn oro orr ra- raa rab raf rai ral ran rao rar rba rbb rbf rbi rbl rbn rbo rbr rfa rfb rff rfi rfl rfn rfo rfr ria rib rif rii ril rin rio rir rla rlf rli rll rln rlo rlr rna rnb rni rnn rno rnr roa rob rof roi rol ron roo ror rra rrb rrf rri rrl rrn rrr