-ic bbb bbc bbg bbi bbk bbn bbo bbt bbx bcb bcc bcg bci bck bcn bco bct bcx bgb bgc bgg bgi bgk bgn bgo bgt bgx bi- bib bic big bii bik bin bio bit bix bkb bkc bkg bkk bkn bko bkt bkx bnb bnc bng bni bnk bnn bno bnt bnx bob boc bog boi bok bon boo bot box btb btc btg bti btk btn bto btt btx bxb bxi bxn bxo bxx c-- cbb cbc cbg cbi cbk cbn cbo cbt cbx ccb ccc ccg cci cck ccn cco cct ccx cgb cgc cgg cgi cgn cgo cgt ci- cib cic cig cii cik cin cio cit cix ckb ckc cki cko ckt ckx cn- cnb cnc cng cni cnn cno cnt cnx co- cob coc cog coi cok con coo cot cox ctb ctc ctg cti ctk ctn cto ctt ctx cxc cxi cxk cxo cxt cxx gbc gbg gbi gbk gbn gbo gbt gbx gcb gcc gcg gci gck gcn gco gct ggb ggc ggg ggi ggn ggo ggt gib gic gig gii gik gin gio git gkb gkn gko gkt gnb gnc gni gnn gno gnt gob goc gog goi gok gon goo got gox gtb gtc gtg gti gtk gtn gto gtt gtx gxt ibb ibc ibg ibi ibk ibn ibo ibt ibx icb icc icg ici ick icn ico ict igb igc igg igi igk ign igo igt iib iic iii iin iio iit iix ikb ikc iki ikk iko ikt ikx in- inb inc ing ini ink inn ino int inx io- iob ioc iog ioi ion ioo iot itb itc itg iti itk itn ito itt itx ixc ixi ixn k-t kbb kbc kbi kbk kbn kbo kbx kcb kcc kcg kci kck kcn kct kcx kgb kgc kgi kgo kgx kib kic kig kii kik kin kio kit kix kkb kkc kki kkk kkn kkt kn- knc kng kni knk knn kno knt knx kob koc kog koi kok kon koo kot ktb ktc ktg ktk ktn kto ktt kxo n-i nbb nbc nbg nbi nbk nbn nbo nbt nbx ncb ncc ncg nci nck ncn nco nct ncx ngb ngc ngg ngi ngk ngn ngo ngt nib nic nig nii nik nin nio nit nix nkc nki nkk nkn nko nkt nnb nnc nng nni nnk nnn nno nnt no- nob noc nog noi nok non noo not nox ntb ntc ntg nti ntk ntn nto ntt ntx nxc nxt o-i ob- obb obc obg obi obk obn obo obt obx oc- ocb occ ocg oci ock ocn oco oct ocx ogc ogg ogi ogn ogo ogt ogx oib oic oii oik oin oio oit okb okc okg oki okk oko on- onb onc ong oni onk onn ono ont onx oo- oob ooc oog ooi ook oon ooo oot oox ot- otb otc otg oti otk otn oto ott ox- oxb oxc oxi oxn oxo oxt oxx t-x tbb tbc tbg tbi tbk tbn tbo tbt tcb tcc tcg tci tck tcn tco tct tcx tgb tgc tgg tgi tgk tgn tgo tgt tib tic tig tii tik tin tio tit tix tkb tkc tkg tkk tko tkt tnb tnc tng tni tnk tnn tno tnt tnx to- tob toc tog toi tok ton too tot tox ttb ttc ttg tti ttk ttn tto ttt ttx txi txk txn txt xbc xbx xcb xci xcx xgi xic xii xin xio xit xix xkb xnc xnk xno xoc xog xoi xok xon xoo xot xox xtc xti xtx xxi xxo xxx