C21221212121323223313131323132322331323331323121133132313231232311   >>    C2122121212132322331313132313232233132333132312113313231323123231   <<    C21221212121323223313131323132322331323331323121133132313231232313   >>      C21221212121323223313131323132322331323331323121133132313231232312   >>