C1111233133313231133133313331333133313231121333133313331211111333133112213321   >>    C111123313331323113313331333133313331323112133313331333121111133313311221332   <<    C1111233133313231133133313331333133313231121333133313331211111333133112213323   >>      C1111233133313231133133313331333133313231121333133313331211111333133112213322   >>