-er -ey a-a a-b a-c aaa aab aac aae aah aar aau aay ab- aba abb abc abe abh abr abu aby ac- aca acb acc ace ach acr acu acy aea aeb aec aee aeh aer aeu aey aha ahb ahc ahe ahh ahr ahu ahy ar- ara arb arc are arh arr aru ary au- aua aub auc aue auh aur ay- aya ayc aye ayh ayr ayu b-u baa bab bac bae bah bar bau bay bba bbb bbc bbe bbh bbr bbu bby bca bcb bcc bce bch bcr bcu bcy be- bea beb bec bee beh ber beu bey bha bhb bhc bhe bhh bhr bhu bra brb bre brh brr bru bry bua bub buc bue buh bur buu buy by- bya byc bye byh byr byu c-- caa cab cac cae cah car cau cay cba cbb cbc cbe cbh cbr cbu cby cca ccb ccc cce cch ccr ccu ce- cea ceb cec cee ceh cer ceu cey ch- cha chb chc che chh chr chu chy cra crb crc cre crh crr cru cry cua cub cuc cue cuh cur cuu cuy cya cyb cyc cye cyr eaa eab eac eae eah ear eau eba ebb ebc ebe ebh ebr ebu eby ec- eca ecb ecc ece ech ecr ecu eea eeb eec eee eer eey eha ehb ehc ehe ehh ehr ehu era erb erc ere erh err eru ery eu- eua eub euc eue eur eya eyc eye eyr haa hab hac hae hah har hau hay hba hbb hbc hbe hbh hbr hbu hby hca hcb hcc hce hch hcr hcy he- hea heb hec hee heh her heu hey hha hhb hhc hhe hhh hhr hhu hhy hr- hra hrb hrc hre hrh hrr hru hua hub huc hue huh hur huu huy hy- hya hyb hyc hye hyh hyr hyy ra- raa rab rac rae rah rar rau ray rba rbb rbc rbe rbh rbr rbu rca rcb rcc rce rch rcr rcu re- rea reb rec ree reh rer reu rey rh- rha rhb rhc rhe rhh rhr rhu rra rrb rrc rrh rrr rru rua rub ruc rue ruh rur ruu ruy ry- rya ryc rye ryr ryu ryy ua- uaa uab uac uae uah uar uau uay uba ubb ubc ube ubh ubr ubu uby uca ucb ucc uce uch ucr ucu uea ueb uec uee ueh uer uey uha uhb uhc uhe uhh uhr uhu uhy ur- ura urb urc ure urr uru ury uua uuc uue uur uuu uyc uyu yaa yab yac yae yah yar yau yay ybc ybe ybr yby yca ycc yce ych ycu ycy yea yeb yec yee yeh yer yey yha yhc yhe yhu yra yrc yre yru yua yue yuh yur yuu yuy yyb yyc yye yyu yyy