In reply to @CardColm
@CardColm Looks like pm to me: one reflection, and translations
In reply to @christianp
@CardColm but there's more symmetry if you add "swap colours"
In reply to @CardColm
@CardColm Looks like pm to me: one reflection, and translations
In reply to @christianp
@CardColm but there's more symmetry if you add "swap colours"