C3123223313331322121111331333133313231333132212111112112113121221   >>    C312322331333132212111133133313331323133313221211111211211312122   <<    C3123223313331322121111331333133313231333132212111112112113121223   >>      C3123223313331322121111331333133313231333132212111112112113121222   >>