C123132112322333121111113121111331333133313231333133323223312122221233133322211   >>    C12313211232233312111111312111133133313331323133313332322331212222123313332221   <<    C123132112322333121111113121111331333133313231333133323223312122221233133322213   >>      C123132112322333121111113121111331333133313231333133323223312122221233133322212   >>