C123132112322333121111113121111331333133313231333133323223212332233221231   >>    C12313211232233312111111312111133133313331323133313332322321233223322123   <<    C123132112322333121111113121111331333133313231333133323223212332233221233   >>      C123132112322333121111113121111331333133313231333133323223212332233221232   >>