[LT−2]\left[\mathrm{LT}^{-2}\right][LT−2]
[T−1]\left[\mathrm{T}^{-1}\right][T−1]
[LT]\left[\mathrm{LT}\right][LT]
[L−1T]\left[\mathrm{L}^{-1}\rm{T}\right][L−1T]