a-a a-b aaa aab aad aaj aao aar ab- aba abb abd abj abo abr ad- ada adb add adj ado adr aja ajb ajd ajj ajo ajr aoa aob aod aoj aoo aor ar- ara arb ard arj aro arr baa bab bad baj bao bar bba bbb bbd bbo bbr bda bdb bdd bdj bdo bdr bja bjd bjj bjr boa bob bod boj boo bor bra brb brd brj bro brr daa dab dad daj dao dar dba dbb dbd dbo dbr dda ddb ddd ddo ddr dj- dja djb djd djo doa dob dod doj doo dor dra drb drd drj dro drr j-d jaa jab jad jaj jao jar jba jbj jbo jbr jda jdb jdo jdr jja jjb jjj jjr joa job jod joj joo jor jra jrb jro jrr oaa oab oad oaj oao oar ob- oba obb obd obj obo obr oda odb odd odo odr oja ojb ojd ojo oo- ooa oob ood ooo oor or- ora orb ord oro orr ra- raa rab rad raj rao rar rba rbb rbd rbo rbr rda rdb rdd rdj rdo rdr rja rjr roa rob rod roj roo ror rra rrb rrd rrr