C1111233131211111211113313231333132333132322331323133313231323232311   >>    C111123313121111121111331323133313233313232233132313331323132323231   <<    C1111233131211111211113313231333132333132322331323133313231323232313   >>      C1111233131211111211113313231333132333132322331323133313231323232312   >>