| Value | Category |
|---|---|
| A | High blood pressure |
| AB | |
| ABC | |
| ABCD | |
| ABCDEG | |
| ABCDG | |
| ABCE | |
| ABCG | |
| ABCGX | |
| ABCX | |
| ABD | |
| ABE | |
| ABEG | |
| ABF | |
| ABG | |
| ABX | |
| AC | |
| ACG | |
| AD | |
| ADG | |
| AE | |
| AF | |
| AG | |
| AX | |
| B | Swelling |
| BC | |
| BCG | |
| BCX | |
| BD | |
| BDF | |
| BDG | |
| BE | |
| BEX | |
| BG | |
| BX | |
| C | Wrong position of fetus |
| CD | |
| CE | |
| CF | |
| CX | |
| D | Plancenta too low |
| DX | |
| E | Ruptured uterus |
| EX | |
| F | Narrow pelvis |
| G | Too much fluid |
| GX | |
| X | Other |