C1212121231123232233131323223313233313231323121133132313231333132332311   >>    C121212123112323223313132322331323331323132312113313231323133313233231   <<    C1212121231123232233131323223313233313231323121133132313231333132332313   >>      C1212121231123232233131323223313233313231323121133132313231333132332312   >>