C31232233133313221211113313331333132313331322121111121111123313231333133311231   >>    C3123223313331322121111331333133313231333132212111112111112331323133313331123   <<    C31232233133313221211113313331333132313331322121111121111123313231333133311233   >>      C31232233133313221211113313331333132313331322121111121111123313231333133311232   >>