| Double |
2-suiter of same COLOR - either reds or blacks i.e. overcaller has EITHER diamonds and hearts OR clubs and spades |
| 2 C |
2-suiter of same RANK - either majors or minors i.e. overcaller has EITHER hearts and spades OR clubs and diamonds |
| 2 D |
2-suiter of same SHAPE - either rounded or pointed i.e. overcaller has EITHER clubs and hearts OR diamonds and spades |
| Overcall NT: | Astro | Brozel | Cappelletti | CRASH | DONT | WONT |