was there something attached to this- if not here are 3 patters
2,2,2,1,1,2,2,2,1,1
it starts with repeating the number 2 three times and then repeating the number 1 twice and repeats.
T,T,A,A
2 T and 2 A repeating
TRIANGLE, SQUARE, RECTANGLE TRIANGLE, SQUARE, RECTANGLE
it repeats the same pattern