-ic a-a a-b a-c a-i aaa aab aac aai aao aas aaw ab- aba abb abc abi abo abs abw ac- aca acb acc aci aco acs acw ai- aia aib aic aii aio ais aiw aoa aob aoc aoi aoo aos aow as- asa asb asc asi aso ass asw aw- awa awb awc awi awo aws aww baa bab bac bai bao bas baw bba bbb bbc bbi bbo bbs bbw bca bcb bcc bci bco bcs bi- bia bib bic bii bio bis biw boa bob boc boi boo bos bow bsa bsb bsc bsi bso bss bsw bwa bwb bwc bwi bwo bws c-- caa cab cac cai cao cas caw cba cbb cbc cbi cbo cbs cbw cca ccb ccc cci cco ccs ccw ci- cia cib cic cii cio cis ciw co- coa cob coc coi coo cos cow csa csb csc csi cso css csw cw- cwa cwb cwc cwi cwo cws ia- iaa iab iac iai iao ias iaw iba ibb ibc ibi ibo ibs ibw ica icb icc ici ico ics icw iia iib iic iii iio iis iiw io- ioa iob ioc ioi ioo ios iow is- isa isb isc isi iso iss isw iwa iwb iwc iwi iwo iws iww o-i oaa oab oac oai oao oas oaw ob- oba obb obc obi obo obs obw oc- oca ocb occ oci oco ocs ocw oia oib oic oii oio ois oo- ooa oob ooc ooi ooo oos oow os- osa osb osc osi oso oss osw owa owb owc owi owo ows oww saa sab sac sai sao sas saw sba sbb sbc sbi sbo sbs sbw sca scb scc sci sco scs scw sia sib sic sii sio sis siw soa sob soc soi soo sos sow ss- ssa ssb ssc ssi sso sss ssw swa swb swc swi swo sws waa wab wac wai wao was waw wba wbb wbc wbi wbo wbs wbw wca wcb wcc wci wco wcs wcw wia wib wic wii wis woa wob woc woi woo wos wow wsa wsb wsc wsi wso wss wsw wwa wwc wwi wwo www