C1111233131211111211113313331323133313231323223313331323211232223231   >>    C111123313121111121111331333132313331323132322331333132321123222323   <<    C1111233131211111211113313331323133313231323223313331323211232223233   >>      C1111233131211111211113313331323133313231323223313331323211232223232   >>