C312322331333132212111133133313331333133312121111331323221333131333122313233231   >>    C31232233133313221211113313331333133313331212111133132322133313133312231323323   <<    C312322331333132212111133133313331333133312121111331323221333131333122313233233   >>      C312322331333132212111133133313331333133312121111331323221333131333122313233232   >>