C21221212121211331313233313131133132333132313223313231323233231323223311   >>    C2122121212121133131323331313113313233313231322331323132323323132322331   <<    C21221212121211331313233313131133132333132313223313231323233231323223313   >>      C21221212121211331313233313131133132333132313223313231323233231323223312   >>