-ic bbb bbc bbg bbi bbk bbn bbo bbx bcb bcc bcg bci bck bcn bco bcx bgb bgc bgg bgi bgk bgn bgo bgx bi- bib bic big bii bik bin bio bix bkb bkc bkg bkk bkn bko bkx bnb bnc bng bni bnk bnn bno bnx bob boc bog boi bok bon boo box bxb bxi bxn bxo bxx c-- cbb cbc cbg cbi cbk cbn cbo cbx ccb ccc ccg cci cck ccn cco ccx cgb cgc cgg cgi cgn cgo ci- cib cic cig cii cik cin cio cix ckb ckc cki cko ckx cn- cnb cnc cng cni cnn cno cnx co- cob coc cog coi cok con coo cox cxc cxi cxk cxo cxx gbc gbg gbi gbk gbn gbo gbx gcb gcc gcg gci gck gcn gco ggb ggc ggg ggi ggn ggo gib gic gig gii gik gin gio gkb gkn gko gnb gnc gni gnn gno gob goc gog goi gok gon goo gox ibb ibc ibg ibi ibk ibn ibo ibx icb icc icg ici ick icn ico igb igc igg igi igk ign igo iib iic iii iin iio iix ikb ikc iki ikk iko ikx in- inb inc ing ini ink inn ino inx io- iob ioc iog ioi ion ioo ixc ixi ixn kbb kbc kbi kbk kbn kbo kbx kcb kcc kcg kci kck kcn kcx kgb kgc kgi kgo kgx kib kic kig kii kik kin kio kix kkb kkc kki kkk kkn kn- knc kng kni knk knn kno knx kob koc kog koi kok kon koo kxo n-i nbb nbc nbg nbi nbk nbn nbo nbx ncb ncc ncg nci nck ncn nco ncx ngb ngc ngg ngi ngk ngn ngo nib nic nig nii nik nin nio nix nkc nki nkk nkn nko nnb nnc nng nni nnk nnn nno no- nob noc nog noi nok non noo nox nxc o-i ob- obb obc obg obi obk obn obo obx oc- ocb occ ocg oci ock ocn oco ocx ogc ogg ogi ogn ogo ogx oib oic oii oik oin oio okb okc okg oki okk oko on- onb onc ong oni onk onn ono onx oo- oob ooc oog ooi ook oon ooo oox ox- oxb oxc oxi oxn oxo oxx xbc xbx xcb xci xcx xgi xic xii xin xio xix xkb xnc xnk xno xoc xog xoi xok xon xoo xox xxi xxo xxx