-er -ey a-a a-b a-c aaa aab aac aae aao aar aaw aay ab- aba abb abc abe abo abr abw aby ac- aca acb acc ace aco acr acw acy aea aeb aec aee aeo aer aew aey aoa aob aoc aoe aoo aor aow ar- ara arb arc are aro arr arw ary aw- awa awb awc awe awo awr aww awy ay- aya ayc aye ayo ayr ayw baa bab bac bae bao bar baw bay bba bbb bbc bbe bbo bbr bbw bby bca bcb bcc bce bco bcr bcy be- bea beb bec bee beo ber bew bey boa bob boc boe boo bor bow boy bra brb bre bro brr brw bry bwa bwb bwc bwo bwr bwy by- bya byc bye byo byr c-- caa cab cac cae cao car caw cay cba cbb cbc cbe cbo cbr cbw cby cca ccb ccc cce cco ccr ccw ce- cea ceb cec cee ceo cer cew cey co- coa cob coc coe coo cor cow coy cra crb crc cre cro crr crw cry cw- cwa cwb cwc cwe cwo cwr cya cyb cyc cye cyo cyr cyw eaa eab eac eae eao ear eaw eba ebb ebc ebe ebo ebr ebw eby ec- eca ecb ecc ece eco ecr ecw eea eeb eec eee eeo eer eew eey eo- eoa eob eoc eoe eoo eor eow era erb erc ere ero err erw ery ewa ewb ewc ewe ewo ewr eww ewy eya eyc eye eyo eyr oaa oab oac oae oao oar oaw ob- oba obb obc obe obo obr obw oby oc- oca ocb occ oco ocr ocw oea oeb oec oee oeo oer oey oo- ooa oob ooc ooo oor oow or- ora orb orc ore oro orr ory owa owb owc owe owo oww oya oye oyo ra- raa rab rac rae rao rar raw ray rba rbb rbc rbe rbo rbr rbw rca rcb rcc rce rco rcr rcw re- rea reb rec ree reo rer rew rey roa rob roc roe roo ror row roy rra rrb rrc rrr rwa rwb rwc rwe rwr rwy ry- rya ryc rye ryo ryr ryy waa wab wac wae wao war waw way wba wbb wbc wbe wbo wbr wbw wca wcb wcc wce wco wcr wcw wea web wec wee weo wer wew wey woa wob woc woe woo wor wow woy wr- wra wrc wre wro wrr wrw wry wwa wwc wwe wwo www wy- wya wyc wye wyo wyr yaa yab yac yae yao yar yaw yay ybc ybe ybr yby yca ycc yce yco ycw ycy yea yeb yec yee yeo yer yew yey yob yoc yoe yoo yor yow yoy yra yrc yre yro ywc yyb yyc yye yyy