C11111211113313112113313331333133313331333132313331333133112122211   >>    C1111121111331311211331333133313331333133313231333133313311212221   <<    C11111211113313112113313331333133313331333132313331333133112122213   >>      C11111211113313112113313331333133313331333132313331333133112122212   >>