a-a a-b a-c aaa aab aac aae aas aaw ab- aba abb abc abe abs abw ac- aca acb acc ace acs acw aea aeb aec aee aes aew as- asa asb asc ase ass asw aw- awa awb awc awe aws aww baa bab bac bae bas baw bba bbb bbc bbe bbs bbw bca bcb bcc bce bcs be- bea beb bec bee bes bew bsa bsb bsc bse bss bsw bwa bwb bwc bws c-- caa cab cac cae cas caw cba cbb cbc cbe cbs cbw cca ccb ccc cce ccs ccw ce- cea ceb cec cee ces cew csa csb csc cse css csw cw- cwa cwb cwc cwe cws eaa eab eac eae eas eaw eba ebb ebc ebe ebs ebw ec- eca ecb ecc ece ecs ecw eea eeb eec eee ees eew es- esa esb esc ese ess esw ewa ewb ewc ewe ews eww saa sab sac sae sas saw sba sbb sbc sbe sbs sbw sca scb scc sce scs scw se- sea seb sec see ses sew ss- ssa ssb ssc sse sss ssw swa swb swc swe sws waa wab wac wae was waw wba wbb wbc wbe wbs wbw wca wcb wcc wce wcs wcw wea web wec wee wes wew wsa wsb wsc wse wss wsw wwa wwc wwe www