-ic bbb bbc bbd bbi bbn bbt bby bcb bcc bcd bci bcn bct bcy bdb bdc bdd bdi bdt bdy bi- bib bic bid bii bin bit biy bnb bnc bnd bni bnn bnt btb btc btd bti btn btt bty by- byc byd byi byn byt c-- cbb cbc cbd cbi cbn cbt cby ccb ccc ccd cci ccn cct cdb cdc cdd cdi cdn cdt cdy ci- cib cic cid cii cin cit cn- cnb cnc cnd cni cnn cnt cny ctb ctc ctd cti ctn ctt cty cyb cyc cyd cyn cyt dbb dbc dbd dbi dbn dbt dby dcb dcc dcd dci dcn dct ddb ddc ddd ddi ddn ddt ddy di- dib dic did dii din dit diy dnb dnc dnd dni dnn dnt dny dtb dtc dtd dti dtn dtt dty dy- dyb dyc dyd dyn dyy i-d ibb ibc ibd ibi ibn ibt iby icb icc icd ici icn ict icy idb idc idd idi idn idt idy iib iic iid iii iin iit in- inb inc ind ini inn int iny itb itc itd iti itn itt ity iyc iyt iyy n-i nbb nbc nbd nbi nbn nbt ncb ncc ncd nci ncn nct ndb ndc ndd ndi ndn ndt ndy nib nic nid nii nin nit nnb nnc nni nnn nnt ntb ntc ntd nti ntn ntt nyc nyd nyn nyt nyy tbb tbc tbd tbi tbn tbt tcb tcc tcd tci tcn tct tdb tdc tdd tdi tdn tdt tdy tib tic tid tii tin tit tiy tnb tnc tnd tni tnn tnt ttb ttc ttd tti ttn ttt tty tyc tyd tyn tyt ybc ybi yby ycc ycd yci ycy ydn ydt ydy yid yii yin yit ynd ynn yny ytc ytd ytn ytt yyb yyc yyt yyy