a-a a-b a-c aaa aab aac aae aak aas aaw ab- aba abb abc abe abk abs abw ac- aca acb acc ace ack acs acw aea aeb aec aee aek aes aew aka akb akc ake akk aks akw as- asa asb asc ase ask ass asw aw- awa awb awc awe awk aws aww baa bab bac bae bak bas baw bba bbb bbc bbe bbk bbs bbw bca bcb bcc bce bck bcs be- bea beb bec bee bek bes bew bka bkb bkc bke bkk bks bkw bsa bsb bsc bse bsk bss bsw bwa bwb bwc bwk bws c-- caa cab cac cae cak cas caw cba cbb cbc cbe cbk cbs cbw cca ccb ccc cce cck ccs ccw ce- cea ceb cec cee cek ces cew cka ckb ckc cks ckw csa csb csc cse csk css csw cw- cwa cwb cwc cwe cwk cws eaa eab eac eae eak eas eaw eba ebb ebc ebe ebk ebs ebw ec- eca ecb ecc ece eck ecs ecw eea eeb eec eee eek ees eew eka ekb ekc eke eks es- esa esb esc ese esk ess esw ewa ewb ewc ewe ewk ews eww ka- kaa kab kac kae kak kas kaw kba kbb kbc kbe kbk kbs kbw kca kcb kcc kce kck kcs ke- kea keb kec kee kek kes kew kkb kkc kke kkk kks ksa ksb ksc kse ksk kss ksw kw- kwa kwc kwk kws kww saa sab sac sae sak sas saw sba sbb sbc sbe sbk sbs sbw sca scb scc sce sck scs scw se- sea seb sec see sek ses sew sk- ska skb skc ske skk sks skw ss- ssa ssb ssc sse ssk sss ssw swa swb swc swe swk sws waa wab wac wae wak was waw wba wbb wbc wbe wbs wbw wca wcb wcc wce wck wcs wcw wea web wec wee wek wes wew wka wkb wkc wke wks wkw wsa wsb wsc wse wsk wss wsw wwa wwc wwe www