C11111211113313112113313331333133313331333132313231331123223311   >>    C1111121111331311211331333133313331333133313231323133112322331   <<    C11111211113313112113313331333133313331333132313231331123223313   >>      C11111211113313112113313331333133313331333132313231331123223312   >>