- Plain strings (207) foo
- Anchors (206) ick$
- Ranges (202) [a-f]{4}
- Backrefs (201) (...).*1
- Abba (190) ^((?!(.)(.)32).)+$
- A man, a plan (176) ^(.)(.).*21$
- Prime (286) ^(?!(xx+)1+$)
- Four (199) (.)(.1){3}
- Order (199) ^.{5}[^e]?$
- Triples (574) ^(([147]4|40|3[269]|9[05]|[378]1).+|0[369]*|[81][257])*$
- Glob (384) (rr|ll|[lbr]o|en|ta|y|cr|eat|up).*1
- Balance (287) ^(<(<(<(<(<(<.*)*>)*>)*>)*>)*>)*$
- Powers (80) ^(((x|x{8}|x{128})3?)2?)1?$
- Long count (239) ((..)00 2+01 2+10 2+11 ?){4}
- Long count v2 (239) ((..)00 2+01 2+10 2+11 ?){4}
- Alphabetical (0)