-er -ic bbb bbc bbe bbh bbi bbo bbr bcb bcc bce bch bci bco bcr bcz be- beb bec bee beh bei beo ber bez bhb bhc bhe bhh bhi bho bhr bi- bib bic bie bih bii bio bir biz bob boc boe boh boi boo bor boz brb bre brh bri bro brr brz bze bzh bzo bzr bzz c-- cbb cbc cbe cbh cbi cbo cbr cbz ccb ccc cce cch cci cco ccr ccz ce- ceb cec cee ceh cei ceo cer cez ch- chb chc che chh chi cho chr chz ci- cib cic cie cih cii cio cir co- cob coc coe coh coi coo cor coz crb crc cre crh cri cro crr crz cz- czc cze czo ebb ebc ebe ebh ebi ebo ebr ec- ecb ecc ece ech eci eco ecr eeb eec eee eeo eer ehb ehc ehe ehh ehi eho ehr eib eic eie eii eio eir eo- eob eoc eoe eoh eoi eoo eor erb erc ere erh eri ero err erz eze ezh ezo ezr ezz h-i hbb hbc hbe hbh hbi hbo hbr hbz hcb hcc hce hch hci hco hcr he- heb hec hee heh hei heo her hez hhb hhc hhe hhh hhi hho hhr hhz hib hic hie hih hii hio hir hob hoc hoe hoh hoi hoo hor hr- hrb hrc hre hrh hri hro hrr hrz hze hzo ibb ibc ibe ibh ibi ibo ibr ibz icb icc ice ich ici ico icr icz ie- iec iee iei ier ihb ihc ihe ihh ihi iho ihr iib iic iie iih iii iio iir io- iob ioc ioe ioh ioi ioo ior ir- irb irc ire iri iro irr ize izh izi izo izz o-i ob- obb obc obe obh obi obo obr oc- ocb occ och oci oco ocr ocz oeb oec oee oeh oei oeo oer ohc ohe ohh ohi oho ohr oib oic oie oii oio oir oiz oo- oob ooc ooh ooi ooo oor or- orb orc ore orh ori oro orr orz oze ozo ozz rbb rbc rbe rbh rbi rbo rbr rcb rcc rce rch rci rco rcr re- reb rec ree reh rei reo rer rez rh- rhb rhc rhe rhh rhi rho rhr rib ric rie rih rii rio rir riz rob roc roe roh roi roo ror roz rrb rrc rrh rri rrr rzb rze rzo zbb zbc zbr zce zco zeb zec zee zeh zeo zer zez zhc zhe zhi zho zhr zib zie zio zir ziz zo- zob zoc zoe zoi zoo zor zrh zro zzr zzz