-er -ic bbb bbc bbe bbi bbn bbo bbr bcb bcc bce bci bcn bco bcr bcz be- beb bec bee bei ben beo ber bez bi- bib bic bie bii bin bio bir biz bnb bnc bne bni bnn bno bnr bnz bob boc boe boi bon boo bor boz brb bre bri brn bro brr brz bze bzn bzo bzr bzz c-- cbb cbc cbe cbi cbn cbo cbr cbz ccb ccc cce cci ccn cco ccr ccz ce- ceb cec cee cei cen ceo cer cez ci- cib cic cie cii cin cio cir cn- cnb cnc cne cni cnn cno cnr co- cob coc coe coi con coo cor coz crb crc cre cri crn cro crr crz cz- czc cze czo ebb ebc ebe ebi ebn ebo ebr ec- ecb ecc ece eci ecn eco ecr eeb eec eee een eeo eer eib eic eie eii ein eio eir en- enb enc ene eni enn eno enr enz eo- eob eoc eoe eoi eon eoo eor erb erc ere eri ern ero err erz eze ezo ezr ezz ibb ibc ibe ibi ibn ibo ibr ibz icb icc ice ici icn ico icr icz ie- iec iee iei ien ier iib iic iie iii iin iio iir in- inb inc ine ini inn ino inr io- iob ioc ioe ioi ion ioo ior ir- irb irc ire iri irn iro irr ize izi izo izz n-i nbb nbc nbe nbi nbn nbo nbr ncb ncc nce nci ncn nco ncr ne- neb nec nee nei nen neo ner nez nib nic nie nii nin nio nir niz nnb nnc nne nni nnn nno nnz no- nob noc noe noi non noo nor noz nrb nrc nre nri nrn nro nrr nrz nzb nze nzi nzo nzz o-i ob- obb obc obe obi obn obo obr oc- ocb occ oci ocn oco ocr ocz oeb oec oee oei oen oeo oer oib oic oie oii oin oio oir oiz on- onb onc one oni onn ono onr oo- oob ooc ooi oon ooo oor or- orb orc ore ori orn oro orr orz oze ozo ozz rbb rbc rbe rbi rbn rbo rbr rcb rcc rce rci rcn rco rcr re- reb rec ree rei ren reo rer rez rib ric rie rii rin rio rir riz rnb rnc rni rnn rno rnr rnz rob roc roe roi ron roo ror roz rrb rrc rri rrn rrr rzb rze rzo zbb zbc zbr zce zco zeb zec zee zen zeo zer zez zib zie zin zio zir ziz znc zne znn zno zo- zob zoc zoe zoi zon zoo zor zro zzr zzz