-ic bbb bbc bbi bbo bbr bbs bbw bcb bcc bci bco bcr bcs bi- bib bic bii bio bir bis biw bob boc boi boo bor bos bow brb bri bro brr brs brw bsb bsc bsi bso bsr bss bsw bwb bwc bwi bwo bwr bws c-- cbb cbc cbi cbo cbr cbs cbw ccb ccc cci cco ccr ccs ccw ci- cib cic cii cio cir cis ciw co- cob coc coi coo cor cos cow crb crc cri cro crr crs crw csb csc csi cso csr css csw cw- cwb cwc cwi cwo cwr cws ibb ibc ibi ibo ibr ibs ibw icb icc ici ico icr ics icw iib iic iii iio iir iis iiw io- iob ioc ioi ioo ior ios iow ir- irb irc iri iro irr irs is- isb isc isi iso isr iss isw iwb iwc iwi iwo iwr iws iww o-i ob- obb obc obi obo obr obs obw oc- ocb occ oci oco ocr ocs ocw oib oic oii oio oir ois oo- oob ooc ooi ooo oor oos oow or- orb orc ori oro orr ors os- osb osc osi oso osr oss osw owb owc owi owo ows oww rbb rbc rbi rbo rbr rbs rbw rcb rcc rci rco rcr rcs rcw rib ric rii rio rir ris rob roc roi roo ror ros row rrb rrc rri rrr rrs rsb rsc rsi rso rsr rss rsw rwb rwc rwi rwr rws sbb sbc sbi sbo sbr sbs sbw scb scc sci sco scr scs scw sib sic sii sio sir sis siw sob soc soi soo sor sos sow sr- srb src sri sro srr srs srw ss- ssb ssc ssi sso ssr sss ssw swb swc swi swo swr sws wbb wbc wbi wbo wbr wbs wbw wcb wcc wci wco wcr wcs wcw wib wic wii wir wis wob woc woi woo wor wos wow wr- wrc wri wro wrr wrs wrw wsb wsc wsi wso wsr wss wsw wwc wwi wwo www