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2Tests which escapes cause an external request within a CSS URL scheme for background images.
<div style="background:url(\$[hex2]/fuzz.shazzer.co.uk/$[rand]?$[hex2])"><div style="background:url(\00/fuzz.shazzer.co.uk/f254k4uup3q?00)"><div style="background:url(\00/fuzz.shazzer.co.uk/0a1s4h03h2e9?00)"><div style="background:url(\00/fuzz.shazzer.co.uk/5z287nf2yus?00)"><div style="background:url(\00/fuzz.shazzer.co.uk/4r3uipp9v6q?00)"><div style="background:url(\00/fuzz.shazzer.co.uk/0vdw36a35s9?00)"><div style="background:url(\00/fuzz.shazzer.co.uk/5r1w2dzf2lt?00)"><div style="background:url(\00/fuzz.shazzer.co.uk/38iejwmswl3?00)"><div style="background:url(\00/fuzz.shazzer.co.uk/hdm9qkf7v9m?00)"><div style="background:url(\00/fuzz.shazzer.co.uk/hvmtflgoym7?00)"><div style="background:url(\00/fuzz.shazzer.co.uk/ncjpkusmx58?00)"><div style="background:url(\00/fuzz.shazzer.co.uk/zlntvb863ih?00)"><div style="background:url(\00/fuzz.shazzer.co.uk/74tf2v04j9x?00)"><div style="background:url(\00/fuzz.shazzer.co.uk/6p0wvzpzgs4?00)"><div style="background:url(\00/fuzz.shazzer.co.uk/ifqmxipqf2n?00)"><div style="background:url(\00/fuzz.shazzer.co.uk/wuaa8fwfdti?00)"><div style="background:url(\00/fuzz.shazzer.co.uk/ptiev6btwh?00)"><div style="background:url(\00/fuzz.shazzer.co.uk/ethzoav8njm?00)"><div style="background:url(\00/fuzz.shazzer.co.uk/3f4cxaj6s7b?00)"><div style="background:url(\00/fuzz.shazzer.co.uk/9dtp8yc7k4b?00)">