-ic bbb bbc bbe bbi bbm bbn bbo bcb bcc bce bci bcm bcn bco bcz be- beb bec bee bei bem ben beo bez bi- bib bic bie bii bim bin bio biz bmb bmc bme bmi bmm bmn bmo bmz bnb bnc bne bni bnn bno bnz bob boc boe boi bom bon boo boz bze bzn bzo bzz c-- cbb cbc cbe cbi cbm cbn cbo cbz ccb ccc cce cci ccm ccn cco ccz ce- ceb cec cee cei cem cen ceo cez ci- cib cic cie cii cim cin cio cmb cmc cme cmi cmm cmn cmo cn- cnb cnc cne cni cnm cnn cno co- cob coc coe coi com con coo coz cz- czc cze czm czo ebb ebc ebe ebi ebm ebn ebo ec- ecb ecc ece eci ecm ecn eco eeb eec eee eem een eeo eib eic eie eii eim ein eio em- emb emc eme emi emm emn emo en- enb enc ene eni enm enn eno enz eo- eob eoc eoe eoi eom eon eoo eze ezo ezz ibb ibc ibe ibi ibm ibn ibo ibz icb icc ice ici icm icn ico icz ie- iec iee iei iem ien iib iic iie iii iim iin iio im- imb imc ime imi imm imn imo imz in- inb inc ine ini inm inn ino io- iob ioc ioe ioi iom ion ioo ize izi izm izo izz m-o mbb mbc mbe mbi mbm mbo mc- mcb mcc mce mci mcm mcn mco mcz meb mec mee mei mem men meo mez mi- mib mic mie mii mim min mio miz mmb mmc mme mmi mmm mmn mmo mmz mnb mnc mne mni mnm mnn mno mnz mob moc moe moi mom mon moo moz mzb mzi mzm mzn n-i nbb nbc nbe nbi nbm nbn nbo ncb ncc nce nci ncm ncn nco ne- neb nec nee nei nem nen neo nez nib nic nie nii nim nin nio niz nmb nmc nme nmi nmm nmn nmo nmz nnb nnc nne nni nnm nnn nno nnz no- nob noc noe noi nom non noo noz nzb nze nzi nzo nzz o-i ob- obb obc obe obi obm obn obo oc- ocb occ oci ocm ocn oco ocz oeb oec oee oei oem oen oeo oib oic oie oii oim oin oio oiz om- omb omc ome omi omm omn omo omz on- onb onc one oni onn ono oo- oob ooc ooi oom oon ooo oze ozm ozo ozz zbb zbc zbm zce zco zeb zec zee zem zen zeo zez zib zie zim zin zio ziz zmb zmc zmm znc zne znn zno zo- zob zoc zoe zoi zom zon zoo zzz