C213211331333131212111133133313231333132313331322331323133313331323133313122311   >>    C21321133133313121211113313331323133313231333132233132313331333132313331312231   <<    C213211331333131212111133133313231333132313331322331323133313331323133313122313   >>      C213211331333131212111133133313231333132313331322331323133313331323133313122312   >>