-er -ic a-a a-b a-c a-i aaa aab aac aae aaf aai aan aao aar aas aau ab- aba abb abc abe abf abi abn abo abr abs abu ac- aca acb acc ace acf aci acn aco acr acs acu aea aeb aec aee aef aei aen aeo aer aes aeu af- afa afb afc afe aff afi afn afo afr afs afu ai- aia aib aic aie aif aii ain aio air ais aiu an- ana anb anc ane anf ani ann ano anr ans anu aoa aob aoc aoe aof aoi aon aoo aor aos aou ar- ara arb arc are arf ari arn aro arr ars aru as- asa asb asc ase asf asi asn aso asr ass asu au- aua aub auc aue auf aui aun auo aur aus b-u baa bab bac bae baf bai ban bao bar bas bau bba bbb bbc bbe bbf bbi bbn bbo bbr bbs bbu bca bcb bcc bce bcf bci bcn bco bcr bcs bcu be- bea beb bec bee bef bei ben beo ber bes beu bfa bfb bfc bfe bff bfi bfn bfo bfr bfs bfu bi- bia bib bic bie bif bii bin bio bir bis biu bna bnb bnc bne bnf bni bnn bno bnr bns bnu boa bob boc boe bof boi bon boo bor bos bou bra brb bre brf bri brn bro brr brs bru bsa bsb bsc bse bsf bsi bsn bso bsr bss bsu bua bub buc bue buf bui bun buo bur bus buu c-- caa cab cac cae caf cai can cao car cas cau cba cbb cbc cbe cbf cbi cbn cbo cbr cbs cbu cca ccb ccc cce ccf cci ccn cco ccr ccs ccu ce- cea ceb cec cee cef cei cen ceo cer ces ceu cfa cfb cfc cfe cff cfi cfn cfo cfr cfs cfu ci- cia cib cic cie cif cii cin cio cir cis ciu cn- cna cnb cnc cne cnf cni cnn cno cnr cns cnu co- coa cob coc coe cof coi con coo cor cos cou cra crb crc cre crf cri crn cro crr crs cru csa csb csc cse csf csi csn cso csr css csu cua cub cuc cue cuf cui cun cuo cur cus cuu eaa eab eac eae eaf eai ean eao ear eas eau eba ebb ebc ebe ebf ebi ebn ebo ebr ebs ebu ec- eca ecb ecc ece ecf eci ecn eco ecr ecs ecu eea eeb eec eee eef een eeo eer ees ef- efa efb efc efe eff efi efo efr efs eia eib eic eie eif eii ein eio eir eis eiu en- ena enb enc ene enf eni enn eno enr ens enu eo- eoa eob eoc eoe eof eoi eon eoo eor eos eou era erb erc ere erf eri ern ero err ers eru es- esa esb esc ese esf esi esn eso esr ess esu eu- eua eub euc eue euf eui eun eur eus faa fab fac fae faf fai fan fao far fas fau fba fbb fbc fbe fbf fbi fbn fbo fbr fbs fbu fca fcb fcc fce fcf fci fcn fco fcr fcs fcu fea feb fec fee fef fei fen feo fer fes feu ffa ffc ffe fff ffi ffn ffo ffr ffs ffu fia fib fic fie fif fii fin fir fis fiu fna fnb fnc fne fnf fni fnn fnr fns fnu foa fob foc foe fof foi fon foo for fos fou fra frb frc fre frf fri frn fro frr frs fru fsa fsb fsc fse fsf fsi fsn fso fsr fss fsu fua fub fue fuf fui fun fuo fur fus fuu i-f ia- iaa iab iac iae iaf iai ian iao iar ias iau iba ibb ibc ibe ibf ibi ibn ibo ibr ibs ibu ica icb icc ice icf ici icn ico icr ics icu ie- iea iec iee ief iei ien ier ies ifa ifb ifc ife iff ifi ifn ifo ifr ifs ifu iia iib iic iie iif iii iin iio iir iis iiu in- ina inb inc ine inf ini inn ino inr ins inu io- ioa iob ioc ioe iof ioi ion ioo ior ios iou ir- ira irb irc ire irf iri irn iro irr irs iru is- isa isb isc ise isf isi isn iso isr iss isu iu- iua iub iuc iue iui iur ius n-i naa nab nac nae naf nai nan nao nar nas nau nba nbb nbc nbe nbf nbi nbn nbo nbr nbs nbu nca ncb ncc nce ncf nci ncn nco ncr ncs ncu ne- nea neb nec nee nef nei nen neo ner nes neu nfa nfb nfc nfe nff nfi nfn nfo nfr nfs nfu nia nib nic nie nif nii nin nio nir nis niu nna nnb nnc nne nnf nni nnn nno nns nnu no- noa nob noc noe nof noi non noo nor nos nou nra nrb nrc nre nrf nri nrn nro nrr nrs nru nsa nsb nsc nse nsf nsi nsn nso nsr nss nsu nua nub nuc nue nui nun nuo nur nus nuu o-i oaa oab oac oae oaf oai oan oao oar oas oau ob- oba obb obc obe obf obi obn obo obr obs obu oc- oca ocb occ ocf oci ocn oco ocr ocs ocu oea oeb oec oee oef oei oen oeo oer oes of- ofa ofb ofc ofe off ofi ofn ofo ofr ofs ofu oia oib oic oie oif oii oin oio oir ois oiu on- ona onb onc one onf oni onn ono onr ons onu oo- ooa oob ooc oof ooi oon ooo oor oos or- ora orb orc ore orf ori orn oro orr ors oru os- osa osb osc ose osf osi osn oso osr oss osu ou- oua ouc oue ouf oui oun ouo our ous ra- raa rab rac rae raf rai ran rao rar ras