-er -ic a-a a-b a-c a-i a-t aaa aab aac aae aaf aai aao aar aas aat aau ab- aba abb abc abe abf abi abo abr abs abt abu ac- aca acb acc ace acf aci aco acr acs act acu aea aeb aec aee aef aei aeo aer aes aet aeu af- afa afb afc afe aff afi afo afr afs aft afu ai- aia aib aic aie aif aii aio air ais ait aiu aoa aob aoc aoe aof aoi aoo aor aos aot aou ar- ara arb arc are arf ari aro arr ars art aru as- asa asb asc ase asf asi aso asr ass ast asu at- ata atb atc ate atf ati ato atr ats att atu au- aua aub auc aue auf aui auo aur aus aut b-u baa bab bac bae baf bai bao bar bas bat bau bba bbb bbc bbe bbf bbi bbo bbr bbs bbt bbu bca bcb bcc bce bcf bci bco bcr bcs bct bcu be- bea beb bec bee bef bei beo ber bes bet beu bfa bfb bfc bfe bff bfi bfo bfr bfs bft bfu bi- bia bib bic bie bif bii bio bir bis bit biu boa bob boc boe bof boi boo bor bos bot bou bra brb bre brf bri bro brr brs brt bru bsa bsb bsc bse bsf bsi bso bsr bss bst bsu bta btb btc bte btf bti bto btr bts btt btu bua bub buc bue buf bui buo bur bus but buu c-- caa cab cac cae caf cai cao car cas cat cau cba cbb cbc cbe cbf cbi cbo cbr cbs cbt cbu cca ccb ccc cce ccf cci cco ccr ccs cct ccu ce- cea ceb cec cee cef cei ceo cer ces cet ceu cfa cfb cfc cfe cff cfi cfo cfr cfs cft cfu ci- cia cib cic cie cif cii cio cir cis cit ciu co- coa cob coc coe cof coi coo cor cos cot cou cra crb crc cre crf cri cro crr crs crt cru csa csb csc cse csf csi cso csr css cst csu cta ctb ctc cte ctf cti cto ctr cts ctt ctu cua cub cuc cue cuf cui cuo cur cus cut cuu eaa eab eac eae eaf eai eao ear eas eat eau eba ebb ebc ebe ebf ebi ebo ebr ebs ebt ebu ec- eca ecb ecc ece ecf eci eco ecr ecs ect ecu eea eeb eec eee eef eeo eer ees eet ef- efa efb efc efe eff efi efo efr efs eft eia eib eic eie eif eii eio eir eis eit eiu eo- eoa eob eoc eoe eof eoi eoo eor eos eot eou era erb erc ere erf eri ero err ers ert eru es- esa esb esc ese esf esi eso esr ess est esu eta etb etc ete etf eti eto etr ets ett etu eu- eua eub euc eue euf eui eur eus eut faa fab fac fae faf fai fao far fas fat fau fba fbb fbc fbe fbf fbi fbo fbr fbs fbt fbu fca fcb fcc fce fcf fci fco fcr fcs fct fcu fea feb fec fee fef fei feo fer fes fet feu ffa ffc ffe fff ffi ffo ffr ffs fft ffu fia fib fic fie fif fii fir fis fit fiu foa fob foc foe fof foi foo for fos fot fou fra frb frc fre frf fri fro frr frs frt fru fsa fsb fsc fse fsf fsi fso fsr fss fst fsu fta ftb ftc fte ftf fti fto ftr fts ftt ftu fua fub fue fuf fui fuo fur fus fut fuu i-f ia- iaa iab iac iae iaf iai iao iar ias iat iau iba ibb ibc ibe ibf ibi ibo ibr ibs ibt ibu ica icb icc ice icf ici ico icr ics ict icu ie- iea iec iee ief iei ier ies iet ifa ifb ifc ife iff ifi ifo ifr ifs ift ifu iia iib iic iie iif iii iio iir iis iit iiu io- ioa iob ioc ioe iof ioi ioo ior ios iot iou ir- ira irb irc ire irf iri iro irr irs irt iru is- isa isb isc ise isf isi iso isr iss ist isu ita itb itc ite itf iti ito its itt itu iu- iua iub iuc iue iui iur ius iut o-i oaa oab oac oae oaf oai oao oar oas oat oau ob- oba obb obc obe obf obi obo obr obs obt obu oc- oca ocb occ ocf oci oco ocr ocs oct ocu oea oeb oec oee oef oei oeo oer oes oet of- ofa ofb ofc ofe off ofi ofo ofr ofs oft ofu oia oib oic oie oif oii oio oir ois oit oiu oo- ooa oob ooc oof ooi ooo oor oos oot or- ora orb orc ore orf ori oro orr ors ort oru os- osa osb osc ose osf osi oso osr oss ost osu ot- ota otb otc ote otf oti oto otr ots ott otu ou- oua ouc oue ouf oui ouo our ous out ra- raa rab rac rae raf rai rao rar ras rat rau rba rbb rbc rbe rbf rbi rbo rbr rbs rbt rbu rca rcb rcc rce rcf rci rco rcr rcs rct rcu re- rea reb rec ree ref rei reo rer res ret reu rfa rfb rfc rfe rff rfi rfo rfr rfs rft rfu ria rib ric rie rif rii rio rir ris rit roa rob roc roe rof roi roo ror ros rot rou rra rrb rrc rrf rri rrr rrs rrt rru rsa rsb rsc rse rsf rsi rso rsr rss rst rsu rta rtb rtc rte rtf rti rto rtr rts rtt rtu rua rub ruc rue ruf rui ruo rur rus rut ruu saa sab sac sae saf sai sao sar sas sat sau sba sbb