C312322331333132212111133133313331333133312121111331333222313231312321   >>    C31232233133313221211113313331333133313331212111133133322231323131232   <<    C312322331333132212111133133313331333133312121111331333222313231312323   >>      C312322331333132212111133133313331333133312121111331333222313231312322   >>