-al -ol a-a a-b a-i aaa aab aad aai aal aao aar ab- aba abb abd abi abl abo abr ad- ada adb add adi adl ado adr ai- aia aib aid aii ail aio air al- ala alb ald ali all alo alr aoa aob aod aoi aol aoo aor ar- ara arb ard ari arl aro arr baa bab bad bai bal bao bar bba bbb bbd bbi bbl bbo bbr bda bdb bdd bdi bdl bdo bdr bi- bia bib bid bii bil bio bir bla blb bld bli bll blo blr boa bob bod boi bol boo bor bra brb brd bri brl bro brr daa dab dad dai dal dao dar dba dbb dbd dbi dbl dbo dbr dda ddb ddd ddi ddl ddo ddr di- dia dib did dii dil dio dir dl- dla dlb dld dli dll dlo dlr doa dob dod doi dol doo dor dra drb drd dri drl dro drr i-d ia- iaa iab iad iai ial iao iar iba ibb ibd ibi ibl ibo ibr ida idb idd idi idl ido idr iia iib iid iii iil iio iir il- ila ilb ild ili ill ilo ilr io- ioa iob iod ioi iol ioo ior ir- ira irb ird iri irl iro irr la- laa lab lad lai lal lao lar lba lbb lbd lbi lbl lbo lbr lda ldb ldd ldi ldl ldo ldr lia lib lid lii lil lio lir lla llb lld lli lll llo llr loa lob lod loi lol loo lor lra lrb lrd lri lro lrr o-i oaa oab oad oai oal oao oar ob- oba obb obd obi obl obo obr oda odb odd odi odl odo odr oia oib oid oii oil oio oir ola olb old oli oll olo oo- ooa oob ood ooi ool ooo oor or- ora orb ord ori orl oro orr ra- raa rab rad rai ral rao rar rba rbb rbd rbi rbl rbo rbr rda rdb rdd rdi rdl rdo rdr ria rib rid rii ril rio rir rla rld rli rll rlo rlr roa rob rod roi rol roo ror rra rrb rrd rri rrl rrr