C1111233131211111211113313331333133313232212111133131133133313231323133313231   >>    C111123313121111121111331333133313331323221211113313113313331323132313331323   <<    C1111233131211111211113313331333133313232212111133131133133313231323133313233   >>      C1111233131211111211113313331333133313232212111133131133133313231323133313232   >>