-er a-a a-b aaa aab aad aae aaj aao aar aav ab- aba abb abd abe abj abo abr abv ad- ada adb add ade adj ado adr adv aea aeb aed aee aej aeo aer aev aja ajb ajd aje ajj ajo ajr aoa aob aod aoe aoj aoo aor aov ar- ara arb ard are arj aro arr arv av- ava avb avd ave avo avr baa bab bad bae baj bao bar bav bba bbb bbd bbe bbo bbr bda bdb bdd bde bdj bdo bdr bdv be- bea beb bed bee beo ber bev bja bjd bjj bjr boa bob bod boe boj boo bor bov bra brb brd bre brj bro brr brv bva bvb bvd bve bvo bvr bvv daa dab dad dae daj dao dar dav dba dbb dbd dbe dbo dbr dbv dda ddb ddd dde ddo ddr de- dea deb ded dee dej deo der dev dj- dja djb djd dje djo djv doa dob dod doe doj doo dor dov dra drb drd dre drj dro drr drv dva dvb dvd dve dvj dvr eaa eab ead eae eaj eao ear eav eba ebb ebd ebe ebj ebo ebr ebv ed- eda edb edd ede edj edo edr eea eeb eed eee eeo eer eev eja ejd ejo eo- eoa eob eod eoe eoo eor era erb erd ere ero err erv eva evb evd eve evo evr evv j-d jaa jab jad jae jaj jao jar jav jba jbj jbo jbr jda jdb jde jdo jdr jdv jea jeb jed jee jej jeo jer jja jjb jjj jjr joa job jod joe joj joo jor jra jrb jro jrr jvb oaa oab oad oae oaj oao oar oav ob- oba obb obd obe obj obo obr obv oda odb odd ode odo odr odv oea oeb oed oee oeo oer oja ojb ojd oje ojo oo- ooa oob ood ooo oor oov or- ora orb ord ore oro orr orv ov- ova ovb ovd ove ovo ovv ra- raa rab rad rae raj rao rar rav rba rbb rbd rbe rbo rbr rda rdb rdd rde rdj rdo rdr rdv re- rea reb red ree reo rer rev rja rjr roa rob rod roe roj roo ror rov rra rrb rrd rrr rva rvb rvd rve rvo rvr rvv v-a v-e vaa vab vad vae vaj vao var vav vba vbd vbo vbr vbv vdb vdd vde vdj vdo vdr vdv vea veb ved vee veo ver vja voa vob vod voe voo vor vov vra vrb vrd vre vrr vva vvb vvo vvr vvv