-al -ol a-a a-b a-i a-t aaa aab aai aal aan aao aar aat ab- aba abb abi abl abn abo abr abt ai- aia aib aii ail ain aio air ait al- ala alb ali all aln alo alr alt an- ana anb ani anl ann ano anr ant aoa aob aoi aol aon aoo aor aot ar- ara arb ari arl arn aro arr art at- ata atb ati atl atn ato atr att baa bab bai bal ban bao bar bat bba bbb bbi bbl bbn bbo bbr bbt bi- bia bib bii bil bin bio bir bit bla blb bli bll bln blo blr blt bna bnb bni bnl bnn bno bnr bnt boa bob boi bol bon boo bor bot bra brb bri brl brn bro brr brt bta btb bti btl btn bto btr btt ia- iaa iab iai ial ian iao iar iat iba ibb ibi ibl ibn ibo ibr ibt iia iib iii iil iin iio iir iit il- ila ilb ili ill iln ilo ilr ilt in- ina inb ini inl inn ino inr int io- ioa iob ioi iol ion ioo ior iot ir- ira irb iri irl irn iro irr irt ita itb iti itl itn ito itt la- laa lab lai lal lan lao lar lat lba lbb lbi lbl lbo lbr lbt lia lib lii lil lin lio lir lit lla llb lli lll lln llo llr llt lna lnb lni lnl lnn lno lnr lnt loa lob loi lol lon loo lor lot lra lrb lri lrn lro lrr lrt lta ltb lti ltl lto ltr ltt n-i naa nab nai nal nan nao nar nat nba nbb nbi nbl nbn nbo nbr nbt nia nib nii nil nin nio nir nit nla nlb nli nll nln nlo nlr nlt nna nnb nni nnl nnn nno nnt no- noa nob noi nol non noo nor not nra nrb nri nrl nrn nro nrr nrt nta ntb nti ntn nto ntr ntt o-i oaa oab oai oal oan oao oar oat ob- oba obb obi obl obn obo obr obt oia oib oii oil oin oio oir oit ola olb oli oll oln olo olt on- ona onb oni onl onn ono onr ont oo- ooa oob ooi ool oon ooo oor oot or- ora orb ori orl orn oro orr ort ot- ota otb oti otl otn oto otr ott ra- raa rab rai ral ran rao rar rat rba rbb rbi rbl rbn rbo rbr rbt ria rib rii ril rin rio rir rit rla rli rll rln rlo rlr rlt rna rnb rni rnn rno rnr rnt roa rob roi rol ron roo ror rot rra rrb rri rrl rrn rrr rrt rta rtb rti rtl rtn rto rtr rtt taa tab tai tal tan tao tar tat tba tbb tbi tbl tbn tbo tbr tbt tia tib tii til tin tio tir tit tla tli tll tln tlo tlr tlt tna tnb tni tnl tnn tno tnr tnt to- toa tob toi tol ton too tor tot tra trb tri trl trn tro trr trt tta ttb tti ttl ttn tto ttr ttt