-al -ol a-a a-b a-i aaa aab aai aal aan aao ab- aba abb abi abl abn abo ai- aia aib aii ail ain aio al- ala alb ali all aln alo an- ana anb ani anl ann ano aoa aob aoi aol aon aoo baa bab bai bal ban bao bba bbb bbi bbl bbn bbo bi- bia bib bii bil bin bio bla blb bli bll bln blo bna bnb bni bnl bnn bno boa bob boi bol bon boo ia- iaa iab iai ial ian iao iba ibb ibi ibl ibn ibo iia iib iii iil iin iio il- ila ilb ili ill iln ilo in- ina inb ini inl inn ino io- ioa iob ioi iol ion ioo la- laa lab lai lal lan lao lba lbb lbi lbl lbo lia lib lii lil lin lio lla llb lli lll lln llo lna lnb lni lnl lnn lno loa lob loi lol lon loo n-i naa nab nai nal nan nao nba nbb nbi nbl nbn nbo nia nib nii nil nin nio nla nlb nli nll nln nlo nna nnb nni nnl nnn nno no- noa nob noi nol non noo o-i oaa oab oai oal oan oao ob- oba obb obi obl obn obo oia oib oii oil oin oio ola olb oli oll oln olo on- ona onb oni onl onn ono oo- ooa oob ooi ool oon ooo