The people of Pi Day Town are constantly wrestling with their circle obsession. Even their robins are round!

- c (2015) = ? (2017)
- f (2016) = ? (2017)
- c (2017) = ? (2018)
- h (2018) = ? (2015)
- h (2015) = ? (2016)
- h (2016) = ? (2018)
- t (2017) = ? (2018)
- r (2018) = ? (2017)
- s (2015) = ? (2018)
- k (2016) = ? (2017)
- q (2017) = ? (2015)
- p (2018) = ? (2017)
- q (2015) = ? (2016)
- n (2016) = ? (2015)