bbbb bbci bbin bbpr bbrc bcbc bcbp bccc bcci bcpp bibb bibi bicc bici biin bin- binc bini binn bipp birb biri birn birr bnib bnin bnpp bnrr bpcp bprc brcb bric brin brrr cbbc cbcc cbcn cbcp cbcr cbir cbpc cbpp cbrn ccbc ccbn cccb cccc ccci cccp ccic ccii ccip ccir ccnb ccnc ccni ccnp ccnr ccpn ccpp ccpr ccrc ccri ccrp cibc cibi cicc cici cicr ciii cin- cinc cini cipp cirb circ ciri cirr cnbc cnbp cnci cncp cnib cnic cnrc cnrr cpbc cpic cpnb cpni cpri crbc crcc crcr crib cric crin crip crpc ibrc ibri icbc icbp iccb iccc icci iccn iccp iccr icnb icnc icpc icrc icrr iiii iirc incb inci incr inni innr inp- inpi inpp inri ipcc ipin ippc ippr ipri irbp ircc iri- iric irin irip irpc irrc irri n-ii nbbc nbcc nbci nbic nbpp ncbc ncbi nccc ncci nccn nccp nccr ncip ncnc ncpc ncrc ncri ncrp nibi nicc nici niip niir nini nipc nipr nnnn nnpi nnpr npcc npic npin nppc npri nric nrpc nrpn nrrc pbcc pcbc pccc pcin pcip pcpb pcpn pcpp pcrc pibb pibi picc pici picr piip pinc pini pinn pinp pipi pipp pirc piri pirn pirr pnic pnin pnpp ppcc ppci ppib ppic pppn pppp pprc prbc prcc prcp pri- prii prin prnp prri rbbb rbbr rcbc rccb rccc rcic rcnr rcpi rib- ricc riin rinn ripi ripp ripr riri rnbr rncp rnin rpii rppn rrrr