-er -ey a-a a-b a-c aaa aab aac aae aah aao aar aau aay ab- aba abb abc abe abh abo abr abu aby ac- aca acb acc ace ach aco acr acu acy aea aeb aec aee aeh aeo aer aeu aey aha ahb ahc ahe ahh aho ahr ahu ahy aoa aob aoc aoe aoh aoo aor aou ar- ara arb arc are arh aro arr aru ary au- aua aub auc aue auh auo aur ay- aya ayc aye ayh ayo ayr ayu b-u baa bab bac bae bah bao bar bau bay bba bbb bbc bbe bbh bbo bbr bbu bby bca bcb bcc bce bch bco bcr bcu bcy be- bea beb bec bee beh beo ber beu bey bha bhb bhc bhe bhh bho bhr bhu boa bob boc boe boh boo bor bou boy bra brb bre brh bro brr bru bry bua bub buc bue buh buo bur buu buy by- bya byc bye byh byo byr byu c-- caa cab cac cae cah cao car cau cay cba cbb cbc cbe cbh cbo cbr cbu cby cca ccb ccc cce cch cco ccr ccu ce- cea ceb cec cee ceh ceo cer ceu cey ch- cha chb chc che chh cho chr chu chy co- coa cob coc coe coh coo cor cou coy cra crb crc cre crh cro crr cru cry cua cub cuc cue cuh cuo cur cuu cuy cya cyb cyc cye cyo cyr eaa eab eac eae eah eao ear eau eba ebb ebc ebe ebh ebo ebr ebu eby ec- eca ecb ecc ece ech eco ecr ecu eea eeb eec eee eeo eer eey eha ehb ehc ehe ehh eho ehr ehu eo- eoa eob eoc eoe eoh eoo eor eou era erb erc ere erh ero err eru ery eu- eua eub euc eue eur eya eyc eye eyo eyr haa hab hac hae hah hao har hau hay hba hbb hbc hbe hbh hbo hbr hbu hby hca hcb hcc hce hch hco hcr hcy he- hea heb hec hee heh heo her heu hey hha hhb hhc hhe hhh hho hhr hhu hhy hoa hob hoc hoe hoh hoo hor hou hoy hr- hra hrb hrc hre hrh hro hrr hru hua hub huc hue huh huo hur huu huy hy- hya hyb hyc hye hyh hyo hyr hyy oaa oab oac oae oah oao oar oau ob- oba obb obc obe obh obo obr obu oby oc- oca ocb occ och oco ocr ocu oea oeb oec oee oeh oeo oer oey oha ohc ohe ohh oho ohr ohu oo- ooa oob ooc ooh ooo oor or- ora orb orc ore orh oro orr oru ory ou- oua ouc oue ouh ouo our oya oye oyo ra- raa rab rac rae rah rao rar rau ray rba rbb rbc rbe rbh rbo rbr rbu rca rcb rcc rce rch rco rcr rcu re- rea reb rec ree reh reo rer reu rey rh- rha rhb rhc rhe rhh rho rhr rhu roa rob roc roe roh roo ror rou roy rra rrb rrc rrh rrr rru rua rub ruc rue ruh ruo rur ruu ruy ry- rya ryc rye ryo ryr ryu ryy ua- uaa uab uac uae uah uao uar uau uay uba ubb ubc ube ubh ubo ubr ubu uby uca ucb ucc uce uch uco ucr ucu uea ueb uec uee ueh uer uey uha uhb uhc uhe uhh uho uhr uhu uhy uoa uob uoc uoe uoo uor ur- ura urb urc ure uro urr uru ury uua uuc uue uur uuu uyc uyo uyu yaa yab yac yae yah yao yar yau yay ybc ybe ybr yby yca ycc yce ych yco ycu ycy yea yeb yec yee yeh yeo yer yey yha yhc yhe yhu yob yoc yoe yoo yor you yoy yra yrc yre yro yru yua yue yuh yuo yur yuu yuy yyb yyc yye yyu yyy