1 <svg xmlns=
"http://www.w3.org/2000/svg">
2 <pattern width=
"100%" height=
"100%" id=
"pattern" viewBox=
"0 0 100 100">
3 <rect width=
"100" height=
"100" fill=
"gray"/>
5 <pattern width=
"100%" height=
"100%" id=
"maskPattern" viewBox=
"0 0 100 100">
6 <rect width=
"100" height=
"100" fill=
"gray"/>
9 <circle fill=
"url(#maskPattern)" cx=
"100" cy=
"100" r=
"100"/>
11 <rect width=
"200" height=
"200" mask=
"url(#mask)" fill=
"url(#pattern)"/>