C2132113313331312121111331333132313331323133313223313231311132322221   >>    C213211331333131212111133133313231333132313331322331323131113232222   <<    C2132113313331312121111331333132313331323133313223313231311132322223   >>      C2132113313331312121111331333132313331323133313223313231311132322222   >>