Patterns from the Alhambra
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p4	p4	p6	p4g
p4g	p4m	p3	p4
p6m	p4m	p4m	p1
p4m	p4m	p6m

It is said that 13 of the 17 plane patterns are represented at the Alhambra. The four missing groups are p2, p3m1, pg and pgg.  It is believed that pg and pgg patterns do not appear in Islamic art at all. There is a little more information here.
 Tilings from Historical Sources