C312322331333132212111133133313331333133312121111331333132333122321   >>    C31232233133313221211113313331333133313331212111133133313233312232   <<    C312322331333132212111133133313331333133312121111331333132333122323   >>      C312322331333132212111133133313331333133312121111331333132333122322   >>