-er a-a a-b a-i a-q aaa aab aae aai aao aaq aar aas aau ab- aba abb abe abi abo abq abr abs abu aea aeb aee aei aeo aeq aer aes aeu ai- aia aib aie aii aio aiq air ais aiu aoa aob aoe aoi aoo aor aos aou aqa aqi aqo aqr aqs ar- ara arb are ari aro arq arr ars aru as- asa asb ase asi aso asq asr ass asu au- aua aub aue aui auo aur aus b-u baa bab bae bai bao baq bar bas bau bba bbb bbe bbi bbo bbq bbr bbs bbu be- bea beb bee bei beo beq ber bes beu bi- bia bib bie bii bio bir bis biu boa bob boe boi boo boq bor bos bou bqe bra brb bre bri bro brq brr brs bru bsa bsb bse bsi bso bsr bss bsu bua bub bue bui buo bur bus buu eaa eab eae eai eao ear eas eau eba ebb ebe ebi ebo ebq ebr ebs ebu eea eeb eee eeo eer ees eia eib eie eii eio eir eis eiu eo- eoa eob eoe eoi eoo eoq eor eos eou eqa eqe eqq eqs equ era erb ere eri ero erq err ers eru es- esa esb ese esi eso esq esr ess esu eu- eua eub eue eui eur eus ia- iaa iab iae iai iao iaq iar ias iau iba ibb ibe ibi ibo ibr ibs ibu ie- iea iee iei ier ies iia iib iie iii iio iir iis iiu io- ioa iob ioe ioi ioo ior ios iou iqa iqe iqs iqu ir- ira irb ire iri iro irq irr irs iru is- isa isb ise isi iso isq isr iss isu iu- iua iub iue iui iur ius o-i oaa oab oae oai oao oaq oar oas oau ob- oba obb obe obi obo obr obs obu oea oeb oee oei oeo oer oes oia oib oie oii oio oir ois oiu oo- ooa oob ooi ooo oor oos oqb oqo or- ora orb ore ori oro orr ors oru os- osa osb ose osi oso osq osr oss osu ou- oua oue oui ouo our ous qaa qar qas qau qba qbe qbq qbs qee qeo qie qio qir qis qiu qoi qoo qor qos qqq qqu qra qrb qre qri qrs qru qsa qsi qso qsr qu- qua que qui quo qur qus ra- raa rab rae rai rao raq rar ras rau rba rbb rbe rbi rbo rbr rbs rbu re- rea reb ree rei reo req rer res reu ria rib rie rii rio riq rir ris roa rob roe roi roo ror ros rou rqs rra rrb rri rrq rrr rrs rru rsa rsb rse rsi rso rsq rsr rss rsu rua rub rue rui ruo rur rus ruu saa sab sae sai sao saq sar sas sau sba sbb sbe sbi sbo sbq sbr sbs sbu se- sea seb see sei seo seq ser ses seu sia sib sie sii sio siq sir sis siu soa sob soe soi soo soq sor sos sou sqa sqi sqq sqr sqs sr- sra srb sre sri sro srq srr srs ss- ssa ssb sse ssi sso ssq ssr sss ssu sua sub sue sui suo suq sur sus suu ua- uaa uab uae uai uao uaq uar uas uau uba ubb ube ubi ubo ubr ubs ubu uea ueb uee uei uer ues uia uib uie uii uio uiq uir uis uiu uoa uob uoe uoo uor uos ur- ura urb ure uri uro urr urs uru usa usb use usi uso usr uss usu uua uue uur uus uuu