a-a a-b aaa aab aad aag aam aao aar ab- aba abb abd abg abm abo abr ad- ada adb add adg adm ado adr ag- aga agb agd agg agm ago agr ama amb amd amg amm amo amr aoa aob aod aog aom aoo aor ar- ara arb ard arg arm aro arr baa bab bad bag bam bao bar bba bbb bbd bbg bbm bbo bbr bda bdb bdd bdg bdm bdo bdr bga bgb bgd bgg bgm bgo bgr bma bmb bmd bmg bmm bmo bmr boa bob bod bog bom boo bor bra brb brd brg brm bro brr daa dab dad dag dam dao dar dba dbb dbd dbg dbm dbo dbr dda ddb ddd ddg ddm ddo ddr dga dgd dgg dgm dgr dma dmb dmd dmg dmm dmo dmr doa dob dod dog dom doo dor dra drb drd drg drm dro drr g-d gaa gab gad gag gam gao gar gba gbd gbg gbm gbo gbr gda gdb gdd gdm gdo gdr gga ggb ggd ggg ggm ggo ggr gma gmb gmd gmg gmm gmo gmr goa gob god gog gom goo gor gra grb grd grg grm gro grr m-o m-r maa mab mad mag mam mao mar mba mbb mbd mbg mbm mbo mbr mda mdb mdd mdg mdm mdo mdr mga mgb mgd mgm mgo mgr mma mmb mmd mmg mmm mmo mmr moa mob mod mog mom moo mor mra mrb mrd mrg mrm mro mrr oaa oab oad oag oam oao oar ob- oba obb obd obg obm obo obr oda odb odd odg odm odo odr oga ogd ogg ogo om- oma omb omd omg omm omo omr oo- ooa oob ood oog oom ooo oor or- ora orb ord org orm oro orr ra- raa rab rad rag ram rao rar rba rbb rbd rbg rbm rbo rbr rda rdb rdd rdg rdm rdo rdr rga rgb rgd rgg rgo rgr rma rmb rmd rmg rmm rmo rmr roa rob rod rog rom roo ror rra rrb rrd rrg rrm rrr