-ic bbb bbc bbh bbi bbo bbr bbx bcb bcc bch bci bco bcr bcx bhb bhc bhh bhi bho bhr bhx bi- bib bic bih bii bio bir bix bob boc boh boi boo bor box brb brh bri bro brr brx bxb bxi bxo bxx c-- cbb cbc cbh cbi cbo cbr cbx ccb ccc cch cci cco ccr ccx ch- chb chc chh chi cho chr chx ci- cib cic cih cii cio cir cix co- cob coc coh coi coo cor cox crb crc crh cri cro crr crx cxc cxh cxi cxo cxr cxx h-i hbb hbc hbh hbi hbo hbr hbx hcb hcc hch hci hco hcr hhb hhc hhh hhi hho hhr hib hic hih hii hio hir hix hob hoc hoh hoi hoo hor hox hr- hrb hrc hrh hri hro hrr hxc ibb ibc ibh ibi ibo ibr ibx icb icc ich ici ico icr ihb ihc ihh ihi iho ihr iib iic iih iii iio iir iix io- iob ioc ioh ioi ioo ior ir- irb irc iri iro irr irx ixc ixi o-i ob- obb obc obh obi obo obr obx oc- ocb occ och oci oco ocr ocx ohc ohh ohi oho ohr oib oic oii oio oir oo- oob ooc ooh ooi ooo oor oox or- orb orc orh ori oro orr orx ox- oxb oxc oxi oxo oxx rbb rbc rbh rbi rbo rbr rbx rcb rcc rch rci rco rcr rcx rh- rhb rhc rhh rhi rho rhr rib ric rih rii rio rir rix rob roc roh roi roo ror rox rrb rrc rrh rri rrr rxr xbc xbr xbx xcb xch xci xcr xcx xic xii xio xix xoc xoi xoo xor xox xrc xrx xxi xxo xxx