-er -ic a-a a-b a-c a-i aaa aab aac aae aaf aai aao aar aas ab- aba abb abc abe abf abi abo abr abs ac- aca acb acc ace acf aci aco acr acs aea aeb aec aee aef aei aeo aer aes af- afa afb afc afe aff afi afo afr afs ai- aia aib aic aie aif aii aio air ais aoa aob aoc aoe aof aoi aoo aor aos ar- ara arb arc are arf ari aro arr ars as- asa asb asc ase asf asi aso asr ass baa bab bac bae baf bai bao bar bas bba bbb bbc bbe bbf bbi bbo bbr bbs bca bcb bcc bce bcf bci bco bcr bcs be- bea beb bec bee bef bei beo ber bes bfa bfb bfc bfe bff bfi bfo bfr bfs bi- bia bib bic bie bif bii bio bir bis boa bob boc boe bof boi boo bor bos bra brb bre brf bri bro brr brs bsa bsb bsc bse bsf bsi bso bsr bss c-- caa cab cac cae caf cai cao car cas cba cbb cbc cbe cbf cbi cbo cbr cbs cca ccb ccc cce ccf cci cco ccr ccs ce- cea ceb cec cee cef cei ceo cer ces cfa cfb cfc cfe cff cfi cfo cfr cfs ci- cia cib cic cie cif cii cio cir cis co- coa cob coc coe cof coi coo cor cos cra crb crc cre crf cri cro crr crs csa csb csc cse csf csi cso csr css eaa eab eac eae eaf eai eao ear eas eba ebb ebc ebe ebf ebi ebo ebr ebs ec- eca ecb ecc ece ecf eci eco ecr ecs eea eeb eec eee eef eeo eer ees ef- efa efb efc efe eff efi efo efr efs eia eib eic eie eif eii eio eir eis eo- eoa eob eoc eoe eof eoi eoo eor eos era erb erc ere erf eri ero err ers es- esa esb esc ese esf esi eso esr ess faa fab fac fae faf fai fao far fas fba fbb fbc fbe fbf fbi fbo fbr fbs fca fcb fcc fce fcf fci fco fcr fcs fea feb fec fee fef fei feo fer fes ffa ffc ffe fff ffi ffo ffr ffs fia fib fic fie fif fii fir fis foa fob foc foe fof foi foo for fos fra frb frc fre frf fri fro frr frs fsa fsb fsc fse fsf fsi fso fsr fss i-f ia- iaa iab iac iae iaf iai iao iar ias iba ibb ibc ibe ibf ibi ibo ibr ibs ica icb icc ice icf ici ico icr ics ie- iea iec iee ief iei ier ies ifa ifb ifc ife iff ifi ifo ifr ifs iia iib iic iie iif iii iio iir iis io- ioa iob ioc ioe iof ioi ioo ior ios ir- ira irb irc ire irf iri iro irr irs is- isa isb isc ise isf isi iso isr iss o-i oaa oab oac oae oaf oai oao oar oas ob- oba obb obc obe obf obi obo obr obs oc- oca ocb occ ocf oci oco ocr ocs oea oeb oec oee oef oei oeo oer oes of- ofa ofb ofc ofe off ofi ofo ofr ofs oia oib oic oie oif oii oio oir ois oo- ooa oob ooc oof ooi ooo oor oos or- ora orb orc ore orf ori oro orr ors os- osa osb osc ose osf osi oso osr oss ra- raa rab rac rae raf rai rao rar ras rba rbb rbc rbe rbf rbi rbo rbr rbs rca rcb rcc rce rcf rci rco rcr rcs re- rea reb rec ree ref rei reo rer res rfa rfb rfc rfe rff rfi rfo rfr rfs ria rib ric rie rif rii rio rir ris roa rob roc roe rof roi roo ror ros rra rrb rrc rrf rri rrr rrs rsa rsb rsc rse rsf rsi rso rsr rss saa sab sac sae saf sai sao sar sas sba sbb sbc sbe sbf sbi sbo sbr sbs sca scb scc sce scf sci sco scr scs se- sea seb sec see sef sei seo ser ses sfa sfb sfc sfe sff sfi sfo sfr sfs sia sib sic sie sif sii sio sir sis soa sob soc soe sof soi soo sor sos sr- sra srb src sre srf sri sro srr srs ss- ssa ssb ssc sse ssf ssi sso ssr sss

-ase -ose a-be a-ii aaaa aaab aaac aaae aaaf aaai aaar aaas aaba aabb aabc aabi aaca aacb aacc aace aacf aaci aaco aacr aacs aaea aaec aaes aafa aafb aafc aaff aafi aaib aaic aaii aais aaoe aaoo aara aarc aare aari aaro aars aasa aasc aase aasf aasi aass abaa abab abac abae abaf abai abar abas abb- abba abbb abbe abbi abbo abbr abbs abca abcb abcc abcf abci abcr abcs abec abee aber abes abff abia abib abic abie abir abis aboa abob abof aboo abor abos abra abrc abri abro abrs abs- absa abse absf absi abss acaa acab acac acae acai acar acas acba acca accc acce accf acci acco accs ace- acea acec acer aces acfc acfe acfi acfs aci- acia acic acie acif acir acis acoa acoe acor acos acr- acra acrc acre acri acro acrr acrs acsa acsc acse acsi acss aeac aeaf aeas aebi aebs aecb aeci aeer aeio aer- aera aerc aeri aero aers aesc aess afaa afao afar afbs afca afcb afcc afci afcs afee afer afes affa affc affi affo affs afia afib afif afir afis afoa afoe afoo afor afr- afra afrc afre afri afro afrs afsa afsb afsc aiai aias aiba aibo aica aicc aice aicf aicr aics aiea aiee aiff aifs aiia aiib aiic aiir aioc aioi aira aire airi airo airs aisa aisb aise aisi aiso aisr aoba aoca aoce aocs aora aorb aors