< a-marker-camera type = 'pattern' url = 'pattern-o.patt' > < a-marker-camera type = 'pattern' url = 'pattern-mo.patt' > < a-marker-camera type = 'pattern' url = 'pattern-si.patt' > < a-marker-camera type = 'pattern' url = 'pattern-ro.patt' > < a-marker-camera type = 'pattern' url = 'pattern-i.patt' >