C1111233131211111211113313331333132313231323223313331311312111311   >>    C111123313121111121111331333133313231323132322331333131131211131   <<    C1111233131211111211113313331333132313231323223313331311312111313   >>      C1111233131211111211113313331333132313231323223313331311312111312   >>