-ic bbb bbc bbi bbn bbo bbr bby bcb bcc bci bcn bco bcr bcy bi- bib bic bii bin bio bir biy bnb bnc bni bnn bno bnr bob boc boi bon boo bor boy brb bri brn bro brr bry by- byc byi byn byo byr c-- cbb cbc cbi cbn cbo cbr cby ccb ccc cci ccn cco ccr ci- cib cic cii cin cio cir cn- cnb cnc cni cnn cno cnr cny co- cob coc coi con coo cor coy crb crc cri crn cro crr cry cyb cyc cyn cyo cyr ibb ibc ibi ibn ibo ibr iby icb icc ici icn ico icr icy iib iic iii iin iio iir in- inb inc ini inn ino inr iny io- iob ioc ioi ion ioo ior ir- irb irc iri irn iro irr iry iyc iyo iyr iyy n-i nbb nbc nbi nbn nbo nbr ncb ncc nci ncn nco ncr nib nic nii nin nio nir nnb nnc nni nnn nno no- nob noc noi non noo nor noy nrb nrc nri nrn nro nrr nry nyc nyn nyo nyy o-i ob- obb obc obi obn obo obr oby oc- ocb occ oci ocn oco ocr oib oic oii oin oio oir on- onb onc oni onn ono onr ony oo- oob ooc ooi oon ooo oor or- orb orc ori orn oro orr ory oyi oyo rbb rbc rbi rbn rbo rbr rcb rcc rci rcn rco rcr rib ric rii rin rio rir riy rnb rnc rni rnn rno rnr rny rob roc roi ron roo ror roy rrb rrc rri rrn rrr ry- ryc ryn ryo ryr ryy ybc ybi ybr yby ycc yci yco ycy yii yin yio yir ynn yny yob yoc yoi yon yoo yor yoy yrc yrn yro yyb yyc yyy