-al -ol a-a a-b aaa aab aad aal aao aar aas aav ab- aba abb abd abl abo abr abs abv ad- ada adb add adl ado adr ads adv al- ala alb ald all alo alr als alv aoa aob aod aol aoo aor aos aov ar- ara arb ard arl aro arr ars arv as- asa asb asd asl aso asr ass asv av- ava avb avd avl avo avr avs baa bab bad bal bao bar bas bav bba bbb bbd bbl bbo bbr bbs bda bdb bdd bdl bdo bdr bds bdv bla blb bld bll blo blr bls blv boa bob bod bol boo bor bos bov bra brb brd brl bro brr brs brv bsa bsb bsd bsl bso bsr bss bsv bva bvb bvd bvl bvo bvr bvs bvv daa dab dad dal dao dar das dav dba dbb dbd dbl dbo dbr dbs dbv dda ddb ddd ddl ddo ddr dds dl- dla dlb dld dll dlo dlr dls dlv doa dob dod dol doo dor dos dov dra drb drd drl dro drr drs drv dsa dsb dsd dsl dso dsr dss dsv dva dvb dvd dvl dvr dvs la- laa lab lad lal lao lar las lav lba lbb lbd lbl lbo lbr lbs lbv lda ldb ldd ldl ldo ldr lds ldv lla llb lld lll llo llr lls llv loa lob lod lol loo lor los lov lra lrb lrd lro lrr lrs lrv lsa lsb lsd lsl lso lsr lss lsv lva lvb lvd lvl lvr lvs lvv oaa oab oad oal oao oar oas oav ob- oba obb obd obl obo obr obs obv oda odb odd odl odo odr ods odv ola olb old oll olo ols oo- ooa oob ood ool ooo oor oos oov or- ora orb ord orl oro orr ors orv os- osa osb osd osl oso osr oss osv ov- ova ovb ovd ovl ovo ovs ovv ra- raa rab rad ral rao rar ras rav rba rbb rbd rbl rbo rbr rbs rda rdb rdd rdl rdo rdr rds rdv rla rld rll rlo rlr rls roa rob rod rol roo ror ros rov rra rrb rrd rrl rrr rrs rsa rsb rsd rsl rso rsr rss rsv rva rvb rvd rvl rvo rvr rvs rvv saa sab sad sal sao sar sas sav sba sbb sbd sbl sbo sbr sbs sbv sda sdb sdd sdl sdo sdr sds sdv sla slb sld sll slo slr sls slv soa sob sod sol soo sor sos sov sr- sra srb srd srl sro srr srs srv ss- ssa ssb ssd ssl sso ssr sss ssv sva svb svd svl svo svr svs svv v-a vaa vab vad val vao var vas vav vba vbd vbl vbo vbr vbs vbv vdb vdd vdl vdo vdr vds vdv vl- vla vlb vld vll vlo vls vlv voa vob vod vol voo vor vos vov vra vrb vrd vrr vrs vsa vsb vsd vsl vso vsr vss vsv vva vvb vvo vvr vvs vvv