C312322331333132212111133133313331333133312121111331333123313231132321   >>    C31232233133313221211113313331333133313331212111133133312331323113232   <<    C312322331333132212111133133313331333133312121111331333123313231132323   >>      C312322331333132212111133133313331333133312121111331333123313231132322   >>