-ic b-p bbb bbc bbe bbi bbn bbp bbs bcb bcc bce bci bcn bcp bcs be- beb bec bee bei ben bep bes bi- bib bic bie bii bin bip bis bnb bnc bne bni bnn bnp bns bpb bpc bpe bpi bpn bpp bps bsb bsc bse bsi bsn bsp bss c-- cbb cbc cbe cbi cbn cbp cbs ccb ccc cce cci ccn ccp ccs ce- ceb cec cee cei cen cep ces ci- cib cic cie cii cin cip cis cn- cnb cnc cne cni cnn cnp cns cpb cpc cpe cpi cpn cpp cps csb csc cse csi csn csp css ebb ebc ebe ebi ebn ebp ebs ec- ecb ecc ece eci ecn ecs eeb eec eee een eep ees eib eic eie eii ein eip eis en- enb enc ene eni enn enp ens ep- epb epc epe epi epn epp eps es- esb esc ese esi esn esp ess ibb ibc ibe ibi ibn ibp ibs icb icc ice ici icn icp ics ie- iec iee iei ien iep ies iib iic iie iii iin iip iis in- inb inc ine ini inn inp ins ipb ipc ipe ipi ipn ipp ips is- isb isc ise isi isn isp iss n-i nbb nbc nbe nbi nbn nbp nbs ncb ncc nce nci ncn ncp ncs ne- neb nec nee nei nen nep nes nib nic nie nii nin nip nis nnb nnc nne nni nnn nnp nns npb npc npe npi npn npp nps nsb nsc nse nsi nsn nsp nss p-p pbb pbc pbe pbi pbn pbp pbs pcb pcc pce pci pcn pcp pcs peb pec pee pei pen pep pes pib pic pie pii pin pip pis pn- pnb pnc pne pni pnn pnp pns ppb ppc ppe ppi ppn ppp pps ps- psb psc pse psi psn psp pss sbb sbc sbe sbi sbn sbp sbs scb scc sce sci scn scp scs se- seb sec see sei sen sep ses sib sic sie sii sin sip sis snb snc sne sni snn snp sns spb spc spe spi spn spp sps ss- ssb ssc sse ssi ssn ssp sss