C2132113313331312121111331333132313331323133313223313231333133321221   >>    C213211331333131212111133133313231333132313331322331323133313332122   <<    C2132113313331312121111331333132313331323133313223313231333133321223   >>      C2132113313331312121111331333132313331323133313223313231333133321222   >>