-ic bbb bbc bbe bbh bbi bbo bcb bcc bce bch bci bco be- beb bec bee beh bei beo bhb bhc bhe bhh bhi bho bi- bib bic bie bih bii bio bob boc boe boh boi boo c-- cbb cbc cbe cbh cbi cbo ccb ccc cce cch cci cco ce- ceb cec cee ceh cei ceo ch- chb chc che chh chi cho ci- cib cic cie cih cii cio co- cob coc coe coh coi coo ebb ebc ebe ebh ebi ebo ec- ecb ecc ece ech eci eco eeb eec eee eeo ehb ehc ehe ehh ehi eho eib eic eie eii eio eo- eob eoc eoe eoh eoi eoo h-i hbb hbc hbe hbh hbi hbo hcb hcc hce hch hci hco he- heb hec hee heh hei heo hhb hhc hhe hhh hhi hho hib hic hie hih hii hio hob hoc hoe hoh hoi hoo ibb ibc ibe ibh ibi ibo icb icc ice ich ici ico ie- iec iee iei ihb ihc ihe ihh ihi iho iib iic iie iih iii iio io- iob ioc ioe ioh ioi ioo o-i ob- obb obc obe obh obi obo oc- ocb occ och oci oco oeb oec oee oeh oei oeo ohc ohe ohh ohi oho oib oic oie oii oio oo- oob ooc ooh ooi ooo