-ic b-u bbb bbc bbe bbi bbo bbu bbx bcb bcc bce bci bco bcu bcx be- beb bec bee bei beo beu bex bi- bib bic bie bii bio biu bix bob boc boe boi boo bou box bub buc bue bui buo buu bux bxb bxi bxo bxx c-- cbb cbc cbe cbi cbo cbu cbx ccb ccc cce cci cco ccu ccx ce- ceb cec cee cei ceo ceu cex ci- cib cic cie cii cio ciu cix co- cob coc coe coi coo cou cox cub cuc cue cui cuo cuu cxc cxi cxo cxx ebb ebc ebe ebi ebo ebu ebx ec- ecb ecc ece eci eco ecu ecx eeb eec eee eeo eex eib eic eie eii eio eiu eix eo- eob eoc eoe eoi eoo eou eu- eub euc eue eui eux ex- exc exe exi exo exu exx ibb ibc ibe ibi ibo ibu ibx icb icc ice ici ico icu ie- iec iee iei iex iib iic iie iii iio iiu iix io- iob ioc ioe ioi ioo iou iu- iub iuc iue iui ixc ixe ixi o-i ob- obb obc obe obi obo obu obx oc- ocb occ oci oco ocu ocx oeb oec oee oei oeo oex oib oic oie oii oio oiu oo- oob ooc ooi ooo oox ou- ouc oue oui ouo ox- oxb oxc oxi oxo oxx ubb ubc ube ubi ubo ubu ubx ucb ucc uce uci uco ucu ueb uec uee uei uib uic uie uii uio uiu uob uoc uoe uoo uox uuc uue uuu uxb uxc uxo uxu xbc xbe xbx xcb xci xcx xee xeu xex xic xie xii xio xiu xix xoc xoi xoo xox xue xui xxi xxo xxx