C21221212121211331313233313131133132333132313223313113313231333132333112323231   >>    C2122121212121133131323331313113313233313231322331311331323133313233311232323   <<    C21221212121211331313233313131133132333132313223313113313231333132333112323233   >>      C21221212121211331313233313131133132333132313223313113313231333132333112323232   >>