-er -ic a-a a-b a-c a-i a-q aaa aab aac aae aai aak aaq aar aau ab- aba abb abc abe abi abk abq abr abu ac- aca acb acc ace aci ack acq acr acu aea aeb aec aee aei aek aeq aer aeu ai- aia aib aic aie aii aik aiq air aiu aka akb akc ake aki akk akr aku aqa aqc aqi aqr ar- ara arb arc are ari ark arq arr aru au- aua aub auc aue aui auk aur b-u baa bab bac bae bai bak baq bar bau bba bbb bbc bbe bbi bbk bbq bbr bbu bca bcb bcc bce bci bck bcq bcr bcu be- bea beb bec bee bei bek beq ber beu bi- bia bib bic bie bii bik bir biu bka bkb bkc bke bkk bkq bkr bqc bqe bra brb bre bri brk brq brr bru bua bub buc bue bui buk bur buu c-- caa cab cac cae cai cak caq car cau cba cbb cbc cbe cbi cbk cbq cbr cbu cca ccb ccc cce cci cck ccr ccu ce- cea ceb cec cee cei cek ceq cer ceu ci- cia cib cic cie cii cik ciq cir ciu cka ckb ckc cki cqa cqb cqc cqi cra crb crc cre cri crk crq crr cru cua cub cuc cue cui cuk cuq cur cuu eaa eab eac eae eai eak ear eau eba ebb ebc ebe ebi ebk ebq ebr ebu ec- eca ecb ecc ece eci eck ecq ecr ecu eea eeb eec eee eek eer eia eib eic eie eii eik eir eiu eka ekb ekc eke eki ekr eku eqa eqe eqq equ era erb erc ere eri erk erq err eru eu- eua eub euc eue eui eur ia- iaa iab iac iae iai iaq iar iau iba ibb ibc ibe ibi ibk ibr ibu ica icb icc ice ici ick icq icr icu ie- iea iec iee iei iek ier iia iib iic iie iii iir iiu ika ikb ikc ike iki ikk ikr iku iqa iqc iqe iqu ir- ira irb irc ire iri irk irq irr iru iu- iua iub iuc iue iui iur ka- kaa kab kac kae kai kak kar kau kba kbb kbc kbe kbi kbk kbr kbu kca kcb kcc kce kci kck kcr kcu ke- kea keb kec kee kei kek ker kia kib kic kie kii kik kir kiu kkb kkc kke kki kkk kkr kku kqa kra krc kri krk krr kru kub kuc kue kui kuk kur kuu qaa qac qar qau qba qbc qbe qbq qca qcc qci qec qee qic qie qik qir qiu qki qqk qqq qqu qra qrb qrc qre qri qru qu- qua que qui qur ra- raa rab rac rae rai rak raq rar rau rba rbb rbc rbe rbi rbk rbr rbu rca rcb rcc rce rci rcr rcu re- rea reb rec ree rei rek req rer reu ria rib ric rie rii rik riq rir rkb rkc rke rkk rku rqc rra rrb rrc rri rrk rrq rrr rru rua rub ruc rue rui ruk rur ruu ua- uaa uab uac uae uai uak uaq uar uau uba ubb ubc ube ubi ubk ubr ubu uca ucb ucc uce uci uck ucr ucu uea ueb uec uee uei uer uia uib uic uie uii uiq uir uiu uka ukb ukc uke uki ukk ukr uku ur- ura urb urc ure uri urk urr uru uua uuc uue uur uuu