Large mark along bottom edge near left corner

Mark above slot

Mark in bottom left corner

a

Double-mark in top left corner

a

No marks in bottom corners

Mark in bottom left corner + double mark in bottom right corner (when pip is bottom right)

a

Small mark + larger strong mark in top left corner

c

Mark in top right corner

a

Marks above slot on right edge

a

No mark between stud 2 and 6

No mark between stud 2 and 6

No marks between studs 2, 3, 6 and 7

No mark between studs 2, 3, 6 and 7

No mark near left corner on top ridge

No excess plastic on bottom edge

No line between stud 1 and 2

a

Line between stud 1 and 2

b

Marks on left side of brick and two clear lines across between upper and lower studs

a

Marks on top side of brick

a

Marks of previously removed slot on bottom side

No marks on top side of brick

Marks inside larges stud recess

a

Pip 5mm wide

Pip 6mm wide

a

Pip 7mm wide

a

Pip 8mm wide

b

Low cross support