C1111233131211111211113313331333132313231323223313331323133112311311   >>    C111123313121111121111331333133313231323132322331333132313311231131   <<    C1111233131211111211113313331333132313231323223313331323133112311313   >>      C1111233131211111211113313331333132313231323223313331323133112311312   >>