-er -ic bbb bbc bbe bbh bbi bbn bbo bbr bcb bcc bce bch bci bcn bco bcr be- beb bec bee beh bei ben beo ber bhb bhc bhe bhh bhi bho bhr bi- bib bic bie bih bii bin bio bir bnb bnc bne bni bnn bno bnr bob boc boe boh boi bon boo bor brb bre brh bri brn bro brr c-- cbb cbc cbe cbh cbi cbn cbo cbr ccb ccc cce cch cci ccn cco ccr ce- ceb cec cee ceh cei cen ceo cer ch- chb chc che chh chi chn cho chr ci- cib cic cie cih cii cin cio cir cn- cnb cnc cne cnh cni cnn cno cnr co- cob coc coe coh coi con coo cor crb crc cre crh cri crn cro crr ebb ebc ebe ebh ebi ebn ebo ebr ec- ecb ecc ece ech eci ecn eco ecr eeb eec eee een eeo eer ehb ehc ehe ehh ehi ehn eho ehr eib eic eie eii ein eio eir en- enb enc ene enh eni enn eno enr eo- eob eoc eoe eoh eoi eon eoo eor erb erc ere erh eri ern ero err h-i hbb hbc hbe hbh hbi hbn hbo hbr hcb hcc hce hch hci hcn hco hcr he- heb hec hee heh hei hen heo her hhb hhc hhe hhh hhi hhn hho hhr hib hic hie hih hii hin hio hir hnb hnc hne hnh hnn hno hob hoc hoe hoh hoi hon hoo hor hr- hrb hrc hre hrh hri hrn hro hrr ibb ibc ibe ibh ibi ibn ibo ibr icb icc ice ich ici icn ico icr ie- iec iee iei ien ier ihb ihc ihe ihh ihi ihn iho ihr iib iic iie iih iii iin iio iir in- inb inc ine inh ini inn ino inr io- iob ioc ioe ioh ioi ion ioo ior ir- irb irc ire iri irn iro irr n-i nbb nbc nbe nbi nbn nbo nbr ncb ncc nce nch nci ncn nco ncr ne- neb nec nee neh nei nen neo ner nhb nhc nhe nhh nhi nhn nhr nib nic nie nih nii nin nio nir nnb nnc nne nnh nni nnn nno no- nob noc noe noh noi non noo nor nrb nrc nre nri nrn nro nrr o-i ob- obb obc obe obh obi obn obo obr oc- ocb occ och oci ocn oco ocr oeb oec oee oeh oei oen oeo oer ohc ohe ohh ohi ohn oho ohr oib oic oie oii oin oio oir on- onb onc one onh oni onn ono onr oo- oob ooc ooh ooi oon ooo oor or- orb orc ore orh ori orn oro orr rbb rbc rbe rbh rbi rbn rbo rbr rcb rcc rce rch rci rcn rco rcr re- reb rec ree reh rei ren reo rer rh- rhb rhc rhe rhh rhi rhn rho rhr rib ric rie rih rii rin rio rir rnb rnc rnh rni rnn rno rnr rob roc roe roh roi ron roo ror rrb rrc rrh rri rrn rrr