C213211331333131212111133133313231333132323132313231333132322233311   >>    C21321133133313121211113313331323133313232313231323133313232223331   <<    C213211331333131212111133133313231333132323132313231333132322233313   >>      C213211331333131212111133133313231333132323132313231333132322233312   >>