C111123313121111121111331333133313331323221211113313233121133132311321   >>    C11112331312111112111133133313331333132322121111331323312113313231132   <<    C111123313121111121111331333133313331323221211113313233121133132311323   >>      C111123313121111121111331333133313331323221211113313233121133132311322   >>