pattern - growing or repeating

a b c a b c a b c

• growing

• repeating

a b a b b a b b b a b b b b

• growing

• repeating

1 5 1 1 5 1 1 1 5 1 1 1 1 5

• growing

• repeating

* @ * @ * @ * @

• growing

• repeating

? ? ! ! ? ? ! ! ? ?

• growing

• repeating

3 6 9 12 15 18

• growing

• repeating

0 0 0 # 0 0 0 # 0 0 0 #

• growing

• repeating