-er -ic c-- ccc cce ccf cci ccn cco ccr ccz ce- cec cee cef cei cen ceo cer cez cfc cfe cff cfi cfn cfo cfr cfz ci- cic cie cif cii cin cio cir cn- cnc cne cnf cni cnn cno cnr co- coc coe cof coi con coo cor coz crc cre crf cri crn cro crr crz cz- czc cze czo ec- ecc ece ecf eci ecn eco ecr eec eee eef een eeo eer ef- efc efe eff efi efo efr eic eie eif eii ein eio eir en- enc ene enf eni enn eno enr enz eo- eoc eoe eof eoi eon eoo eor erc ere erf eri ern ero err erz eze ezf ezo ezr ezz fcc fce fcf fci fcn fco fcr fcz fec fee fef fei fen feo fer fez ffc ffe fff ffi ffn ffo ffr ffz fic fie fif fii fin fir fiz fnc fne fnf fni fnn fnr fnz foc foe fof foi fon foo for foz frc fre frf fri frn fro frr i-f icc ice icf ici icn ico icr icz ie- iec iee ief iei ien ier ifc ife iff ifi ifn ifo ifr ifz iic iie iif iii iin iio iir in- inc ine inf ini inn ino inr io- ioc ioe iof ioi ion ioo ior ir- irc ire irf iri irn iro irr ize izi izo izz n-i ncc nce ncf nci ncn nco ncr ne- nec nee nef nei nen neo ner nez nfc nfe nff nfi nfn nfo nfr nic nie nif nii nin nio nir niz nnc nne nnf nni nnn nno nnz no- noc noe nof noi non noo nor noz nrc nre nrf nri nrn nro nrr nrz nze nzf nzi nzo nzz o-i oc- occ ocf oci ocn oco ocr ocz oec oee oef oei oen oeo oer of- ofc ofe off ofi ofn ofo ofr ofz oic oie oif oii oin oio oir oiz on- onc one onf oni onn ono onr oo- ooc oof ooi oon ooo oor or- orc ore orf ori orn oro orr orz oze ozo ozz rcc rce rcf rci rcn rco rcr re- rec ree ref rei ren reo rer rez rfc rfe rff rfi rfn rfo rfr rfz ric rie rif rii rin rio rir riz rnc rni rnn rno rnr rnz roc roe rof roi ron roo ror roz rrc rrf rri rrn rrr rze rzo zce zco zec zee zef zen zeo zer zez zfc zfn zfr zie zif zin zio zir ziz znc zne znn zno zo- zoc zoe zof zoi zon zoo zor zro zzr zzz