C3131313233313113313223313223313112113313233313133313231333132311211   >>    C313131323331311331322331322331311211331323331313331323133313231121   <<    C3131313233313113313223313223313112113313233313133313231333132311213   >>      C3131313233313113313223313223313112113313233313133313231333132311212   >>