c-cd cccc ccci cccp ccdc ccdi ccdp ccic ccid ccii ccip ccpp cctc cctt cdic cdii cicc cici cict cidc cidi cidp cidt ciid ciii ciit cipp citi citp citt cpic cppd cptp ctcp ctic ctpp dccc dcci dccp dcct dcii dctc dddd dici dict didi diii dipc dipp dipt diti ditt dpci dpcp dpdt dppc dtcc dtdp dttp iccc icci iccp icct icdc icdd icdp icpc icpd ictp idic idid idtp iicd iiii iiit iitt ipcc ipct ipdc ipdi ipid ippc iptc itic itpc pccc pcip pcpp pdci pdcp pdic pdtc picc pici pict piip pipi pipp piti pitt ppcc ppcd ppci ppic ppid pppd pppp pptt ptcc ptdc ptpd pttc tccc tcdd tctc ticc tidc tidd tiit tip- tipc tipi tipp tipt titc titi titp titt tpcd tpcp tppd tppp tptp ttcp tttt