-ic bbb bbc bbg bbi bbo bbr bbs bcb bcc bcg bci bco bcr bcs bgb bgc bgg bgi bgo bgr bgs bi- bib bic big bii bio bir bis bob boc bog boi boo bor bos brb brg bri bro brr brs bsb bsc bsg bsi bso bsr bss c-- cbb cbc cbg cbi cbo cbr cbs ccb ccc ccg cci cco ccr ccs cgb cgc cgg cgi cgo cgr cgs ci- cib cic cig cii cio cir cis co- cob coc cog coi coo cor cos crb crc crg cri cro crr crs csb csc csg csi cso csr css gbc gbg gbi gbo gbr gbs gcb gcc gcg gci gco gcr gcs ggb ggc ggg ggi ggo ggr ggs gib gic gig gii gio gir gis gob goc gog goi goo gor gos grb grc grg gri gro grr grs gsb gsc gsg gsi gso gsr gss ibb ibc ibg ibi ibo ibr ibs icb icc icg ici ico icr ics igb igc igg igi igo igr igs iib iic iii iio iir iis io- iob ioc iog ioi ioo ior ios ir- irb irc irg iri iro irr irs is- isb isc isg isi iso isr iss o-i ob- obb obc obg obi obo obr obs oc- ocb occ ocg oci oco ocr ocs ogc ogg ogi ogo ogs oib oic oii oio oir ois oo- oob ooc oog ooi ooo oor oos or- orb orc org ori oro orr ors os- osb osc osg osi oso osr oss rbb rbc rbg rbi rbo rbr rbs rcb rcc rcg rci rco rcr rcs rgb rgc rgg rgi rgo rgr rgs rib ric rig rii rio rir ris rob roc rog roi roo ror ros rrb rrc rrg rri rrr rrs rsb rsc rsg rsi rso rsr rss sbb sbc sbg sbi sbo sbr sbs scb scc scg sci sco scr scs sgb sgc sgg sgi sgo sgr sgs sib sic sig sii sio sir sis sob soc sog soi soo sor sos sr- srb src srg sri sro srr srs ss- ssb ssc ssg ssi sso ssr sss