-er a-a a-b aaa aab aad aae aak aan aar aaw ab- aba abb abd abe abk abn abr abw ad- ada adb add ade adk adn adr adw aea aeb aed aee aek aen aer aew aka akb akd ake akk akn akr akw an- ana anb and ane ank ann anr ar- ara arb ard are ark arn arr arw aw- awa awb awd awe awk awn awr aww baa bab bad bae bak ban bar baw bba bbb bbd bbe bbk bbn bbr bbw bda bdb bdd bde bdk bdr bdw be- bea beb bed bee bek ben ber bew bka bkb bke bkk bkn bkr bkw bna bnb bnd bne bnk bnn bnr bnw bra brb brd bre brk brn brr brw bwa bwb bwd bwk bwr daa dab dad dae dak dan dar daw dba dbb dbd dbe dbk dbn dbr dda ddb ddd dde ddk ddn ddr ddw de- dea deb ded dee dek den der dew dka dkb dke dkk dkr dkw dna dnb dnd dne dnk dnn dnr dnw dra drb drd dre drk drn drr drw dwa dwb dwe dwn dwr dww eaa eab ead eae eak ean ear eaw eba ebb ebd ebe ebk ebn ebr ebw ed- eda edb edd ede edk edn edr edw eea eeb eed eee eek een eer eew eka ekb ekd eke ekr en- ena enb end ene enk enn enr enw era erb erd ere erk ern err erw ewa ewb ewd ewe ewk ewr eww ka- kaa kab kad kae kak kan kar kaw kba kbb kbd kbe kbk kbn kbr kbw kda kdb kde kdk kdr ke- kea keb ked kee kek ken ker kew kkb kke kkk kkn kkr kn- kna knd kne knk knn knr kra krd krk krn krr krw kw- kwa kwd kwk kww naa nab nad nae nak nan nar naw nba nbb nbd nbe nbk nbn nbr nbw nda ndb ndd nde ndk ndn ndr ne- nea neb ned nee nek nen ner new nka nke nkk nkn nkr nna nnb nne nnk nnn nnw nra nrb nrd nre nrk nrn nrr nrw nwa nwb nwd nwe nwn nwr ra- raa rab rad rae rak ran rar raw rba rbb rbd rbe rbk rbn rbr rbw rda rdb rdd rde rdn rdr re- rea reb red ree rek ren rer rew rkb rke rkk rna rnb rnd rnn rnr rnw rra rrb rrd rrk rrn rrr rwa rwb rwd rwe rwr waa wab wad wae wak wan war waw wba wbb wbd wbe wbn wbr wbw wda wdb wdr wea web wed wee wek wen wer wew wka wkb wkd wke wkr wkw wn- wna wnd wne wnn wnw wr- wra wrd wre wrk wrn wrr wrw wwa wwd wwe wwn www