-ic bbb bbc bbe bbi bbs bcb bcc bce bci bcs bcv be- beb bec bee bei bes bev bi- bib bic bie bii bis biv bsb bsc bse bsi bss bsv bvb bvc bve bvi bvs bvv c-- cbb cbc cbe cbi cbs cbv ccb ccc cce cci ccs ccv ce- ceb cec cee cei ces cev ci- cib cic cie cii cis civ csb csc cse csi css csv cvb cvc cve cvi cvs cvv ebb ebc ebe ebi ebs ebv ec- ecb ecc ece eci ecs ecv eeb eec eee ees eev eib eic eie eii eis eiv es- esb esc ese esi ess esv evb evc eve evi evs evv i-v ibb ibc ibe ibi ibs ibv icb icc ice ici ics icv ie- iec iee iei ies iev iib iic iie iii iis is- isb isc ise isi iss isv ivb ivc ive ivi ivs ivv sbb sbc sbe sbi sbs sbv scb scc sce sci scs scv se- seb sec see sei ses sev sib sic sie sii sis siv ss- ssb ssc sse ssi sss ssv svb svc sve svi svs svv v-e vbc vbi vbs vbv vcc vce vci vcs veb vec vee vei ves vi- vib vic vie vii vis viv vsb vsc vse vsi vss vsv vvb vvc vvi vvs vvv