C1111233131211111211113313331333132313231323223313331323132112323231   >>    C111123313121111121111331333133313231323132322331333132313211232323   <<    C1111233131211111211113313331333132313231323223313331323132112323233   >>      C1111233131211111211113313331333132313231323223313331323132112323232   >>