-al -ol a-a a-b a-i aaa aab aai aal aan aao aar ab- aba abb abi abl abn abo abr ai- aia aib aii ail ain aio air al- ala alb ali all aln alo alr an- ana anb ani anl ann ano anr aoa aob aoi aol aon aoo aor ar- ara arb ari arl arn aro arr baa bab bai bal ban bao bar bba bbb bbi bbl bbn bbo bbr bi- bia bib bii bil bin bio bir bla blb bli bll bln blo blr bna bnb bni bnl bnn bno bnr boa bob boi bol bon boo bor bra brb bri brl brn bro brr ia- iaa iab iai ial ian iao iar iba ibb ibi ibl ibn ibo ibr iia iib iii iil iin iio iir il- ila ilb ili ill iln ilo ilr in- ina inb ini inl inn ino inr io- ioa iob ioi iol ion ioo ior ir- ira irb iri irl irn iro irr la- laa lab lai lal lan lao lar lba lbb lbi lbl lbo lbr lia lib lii lil lin lio lir lla llb lli lll lln llo llr lna lnb lni lnl lnn lno lnr loa lob loi lol lon loo lor lra lrb lri lrn lro lrr n-i naa nab nai nal nan nao nar nba nbb nbi nbl nbn nbo nbr nia nib nii nil nin nio nir nla nlb nli nll nln nlo nlr nna nnb nni nnl nnn nno no- noa nob noi nol non noo nor nra nrb nri nrl nrn nro nrr o-i oaa oab oai oal oan oao oar ob- oba obb obi obl obn obo obr oia oib oii oil oin oio oir ola olb oli oll oln olo on- ona onb oni onl onn ono onr oo- ooa oob ooi ool oon ooo oor or- ora orb ori orl orn oro orr ra- raa rab rai ral ran rao rar rba rbb rbi rbl rbn rbo rbr ria rib rii ril rin rio rir rla rli rll rln rlo rlr rna rnb rni rnn rno rnr roa rob roi rol ron roo ror rra rrb rri rrl rrn rrr