See Section 1 from Theory document for mathematical definition.
B: Bilinear
F: Linear
Q: Quadratic
Tr: Threelinear
TrQB: Threelinear-Quadratic-Bilinear
TrB: Threelinear-Bilinear
TrF: Threelinear-Linear
TrC: Threelinear-Cubic
Qu: Fourlinear
QuQTr: Fourlinear-Quadratic-Threelinear
QuTr: Fourlinear- Threelinear
QuCB: Fourlinear- Cubic-Bilinear
QuB: Fourlinear- Bilinear
QuF: Fourlinear-Linear
QuQd: Fourlinear-Quadruple