-ic bbb bbc bbd bbe bbf bbi bbo bcb bcc bcd bce bcf bci bco bdb bdc bdd bde bdf bdi bdo be- beb bec bed bee bef bei beo bfb bfc bfd bfe bff bfi bfo bi- bib bic bid bie bif bii bio bob boc bod boe bof boi boo c-- cbb cbc cbd cbe cbf cbi cbo ccb ccc ccd cce ccf cci cco cdb cdc cdd cde cdf cdi cdo ce- ceb cec ced cee cef cei ceo cfb cfc cfd cfe cff cfi cfo ci- cib cic cid cie cif cii cio co- cob coc cod coe cof coi coo dbb dbc dbd dbe dbf dbi dbo dcb dcc dcd dce dcf dci dco ddb ddc ddd dde ddf ddi ddo de- deb dec ded dee def dei deo dfb dfc dfd dfe dff dfi dfo di- dib dic did die dif dii dio dob doc dod doe dof doi doo ebb ebc ebd ebe ebf ebi ebo ec- ecb ecc ecd ece ecf eci eco ed- edb edc edd ede edf edi edo eeb eec eed eee eef eeo ef- efb efc efd efe eff efi efo eib eic eid eie eif eii eio eo- eob eoc eod eoe eof eoi eoo fbb fbc fbd fbe fbf fbi fbo fcb fcc fcd fce fcf fci fco fdb fdc fdd fde fdf fdi fdo feb fec fed fee fef fei feo ffc ffd ffe fff ffi ffo fib fic fid fie fif fii fob foc foe fof foi foo i-d i-f ibb ibc ibd ibe ibf ibi ibo icb icc icd ice icf ici ico idb idc idd ide idf idi ido ie- iec ied iee ief iei ifb ifc ifd ife iff ifi ifo iib iic iid iie iif iii iio io- iob ioc iod ioe iof ioi ioo o-i ob- obb obc obd obe obf obi obo oc- ocb occ ocd ocf oci oco odb odc odd ode odf odi odo oeb oec oed oee oef oei oeo of- ofb ofc ofd ofe off ofi ofo oib oic oid oie oif oii oio oo- oob ooc ood oof ooi ooo