-er a-a a-b a-c aaa aab aac aae aah aar aas aaw ab- aba abb abc abe abh abr abs abw ac- aca acb acc ace ach acr acs acw aea aeb aec aee aeh aer aes aew aha ahb ahc ahe ahh ahr ahs ahw ar- ara arb arc are arh arr ars arw as- asa asb asc ase ash asr ass asw aw- awa awb awc awe awh awr aws aww baa bab bac bae bah bar bas baw bba bbb bbc bbe bbh bbr bbs bbw bca bcb bcc bce bch bcr bcs be- bea beb bec bee beh ber bes bew bha bhb bhc bhe bhh bhr bhs bhw bra brb bre brh brr brs brw bsa bsb bsc bse bsh bsr bss bsw bwa bwb bwc bwh bwr bws c-- caa cab cac cae cah car cas caw cba cbb cbc cbe cbh cbr cbs cbw cca ccb ccc cce cch ccr ccs ccw ce- cea ceb cec cee ceh cer ces cew ch- cha chb chc che chh chr chs chw cra crb crc cre crh crr crs crw csa csb csc cse csh csr css csw cw- cwa cwb cwc cwe cwh cwr cws eaa eab eac eae eah ear eas eaw eba ebb ebc ebe ebh ebr ebs ebw ec- eca ecb ecc ece ech ecr ecs ecw eea eeb eec eee eer ees eew eha ehb ehc ehe ehh ehr ehs era erb erc ere erh err ers erw es- esa esb esc ese esh esr ess esw ewa ewb ewc ewe ewr ews eww haa hab hac hae hah har has haw hba hbb hbc hbe hbh hbr hbs hbw hca hcb hcc hce hch hcr hcs hcw he- hea heb hec hee heh her hes hew hha hhb hhc hhe hhh hhr hhs hhw hr- hra hrb hrc hre hrh hrr hrs hrw hsa hsb hsc hse hsh hsr hss hsw hw- hwa hwb hwe hwr hws hww ra- raa rab rac rae rah rar ras raw rba rbb rbc rbe rbh rbr rbs rbw rca rcb rcc rce rch rcr rcs rcw re- rea reb rec ree reh rer res rew rh- rha rhb rhc rhe rhh rhr rhs rra rrb rrc rrh rrr rrs rsa rsb rsc rse rsh rsr rss rsw rwa rwb rwc rwe rwh rwr rws saa sab sac sae sah sar sas saw sba sbb sbc sbe sbh sbr sbs sbw sca scb scc sce sch scr scs scw se- sea seb sec see seh ser ses sew sh- sha shb shc she shh shr shs sr- sra srb src sre srh srr srs srw ss- ssa ssb ssc sse ssh ssr sss ssw swa swb swc swe swh swr sws waa wab wac wae wah war was waw wba wbb wbc wbe wbr wbs wbw wca wcb wcc wce wch wcr wcs wcw wea web wec wee weh wer wes wew wh- wha whb whc whh whr whs whw wr- wra wrc wre wrh wrr wrs wrw wsa wsb wsc wse wsh wsr wss wsw wwa wwc wwe www