-ic b-u bbb bbc bbe bbi bbn bbs bbu bcb bcc bce bci bcn bcs bcu be- beb bec bee bei ben bes beu bi- bib bic bie bii bin bis biu bnb bnc bne bni bnn bns bnu bsb bsc bse bsi bsn bss bsu bub buc bue bui bun bus buu c-- cbb cbc cbe cbi cbn cbs cbu ccb ccc cce cci ccn ccs ccu ce- ceb cec cee cei cen ces ceu ci- cib cic cie cii cin cis ciu cn- cnb cnc cne cni cnn cns cnu csb csc cse csi csn css csu cub cuc cue cui cun cus cuu ebb ebc ebe ebi ebn ebs ebu ec- ecb ecc ece eci ecn ecs ecu eeb eec eee een ees eib eic eie eii ein eis eiu en- enb enc ene eni enn ens enu es- esb esc ese esi esn ess esu eu- eub euc eue eui eun eus ibb ibc ibe ibi ibn ibs ibu icb icc ice ici icn ics icu ie- iec iee iei ien ies iib iic iie iii iin iis iiu in- inb inc ine ini inn ins inu is- isb isc ise isi isn iss isu iu- iub iuc iue iui ius n-i nbb nbc nbe nbi nbn nbs nbu ncb ncc nce nci ncn ncs ncu ne- neb nec nee nei nen nes neu nib nic nie nii nin nis niu nnb nnc nne nni nnn nns nnu nsb nsc nse nsi nsn nss nsu nub nuc nue nui nun nus nuu sbb sbc sbe sbi sbn sbs sbu scb scc sce sci scn scs scu se- seb sec see sei sen ses seu sib sic sie sii sin sis siu snb snc sne sni snn sns snu ss- ssb ssc sse ssi ssn sss ssu sub suc sue sui sun sus suu ubb ubc ube ubi ubn ubs ubu ucb ucc uce uci ucn ucs ucu ueb uec uee uei uen ues uib uic uie uii uin uis uiu un- unb unc une uni unn uns unu usb usc use usi usn uss usu uuc uue uun uus uuu