-er a-a a-b a-c a-q aaa aab aac aae aah aao aaq aar aau ab- aba abb abc abe abh abo abq abr abu ac- aca acb acc ace ach aco acq acr acu aea aeb aec aee aeh aeo aeq aer aeu aha ahb ahc ahe ahh aho ahq ahr ahu aoa aob aoc aoe aoh aoo aor aou aqa aqc aqo aqr ar- ara arb arc are arh aro arq arr aru au- aua aub auc aue auh auo aur b-u baa bab bac bae bah bao baq bar bau bba bbb bbc bbe bbh bbo bbq bbr bbu bca bcb bcc bce bch bco bcq bcr bcu be- bea beb bec bee beh beo beq ber beu bha bhb bhc bhe bhh bho bhq bhr bhu boa bob boc boe boh boo boq bor bou bqc bqe bra brb bre brh bro brq brr bru bua bub buc bue buh buo bur buu c-- caa cab cac cae cah cao caq car cau cba cbb cbc cbe cbh cbo cbq cbr cbu cca ccb ccc cce cch cco ccr ccu ce- cea ceb cec cee ceh ceo ceq cer ceu ch- cha chb chc che chh cho chq chr chu co- coa cob coc coe coh coo coq cor cou cqa cqb cqc cqo cra crb crc cre crh cro crq crr cru cua cub cuc cue cuh cuo cuq cur cuu eaa eab eac eae eah eao ear eau eba ebb ebc ebe ebh ebo ebq ebr ebu ec- eca ecb ecc ece ech eco ecq ecr ecu eea eeb eec eee eeo eer eha ehb ehc ehe ehh eho ehr ehu eo- eoa eob eoc eoe eoh eoo eoq eor eou eqa eqe eqq equ era erb erc ere erh ero erq err eru eu- eua eub euc eue eur haa hab hac hae hah hao haq har hau hba hbb hbc hbe hbh hbo hbr hbu hca hcb hcc hce hch hco hcr he- hea heb hec hee heh heo her heu hha hhb hhc hhe hhh hho hhr hhu hoa hob hoc hoe hoh hoo hor hou hr- hra hrb hrc hre hrh hro hrr hru hua hub huc hue huh huo huq hur huu oaa oab oac oae oah oao oaq oar oau ob- oba obb obc obe obh obo obr obu oc- oca ocb occ och oco ocr ocu oea oeb oec oee oeh oeo oer oha ohc ohe ohh oho ohq ohr ohu oo- ooa oob ooc ooh ooo oor oqb oqo or- ora orb orc ore orh oro orr oru ou- oua ouc oue ouh ouo our qaa qac qah qar qau qba qbc qbe qbq qca qcc qco qec qee qeh qeo qhc qoo qor qqq qqu qra qrb qrc qre qrh qru qu- qua que quh quo qur ra- raa rab rac rae rah rao raq rar rau rba rbb rbc rbe rbh rbo rbr rbu rca rcb rcc rce rch rco rcr rcu re- rea reb rec ree reh reo req rer reu rh- rha rhb rhc rhe rhh rho rhr rhu roa rob roc roe roh roo ror rou rqc rra rrb rrc rrh rrq rrr rru rua rub ruc rue ruh ruo rur ruu ua- uaa uab uac uae uah uao uaq uar uau uba ubb ubc ube ubh ubo ubr ubu uca ucb ucc uce uch uco ucr ucu uea ueb uec uee ueh uer uha uhb uhc uhe uhh uho uhq uhr uhu uoa uob uoc uoe uoo uor ur- ura urb urc ure uro urr uru uua uuc uue uur uuu