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Energy differences between frozen core and all electrons correlated.
MP2, MP3, MP4, B2PLYP, CCSD, and CCSD(T)

For CF3COOH (trifluoroacetic acid)

Energies in Hartree
Methods with standard basis sets
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) TZVP cc-pVDZ cc-pVTZ
Moller Plesset perturbation MP2=FULL -0.001074 -0.012618 -0.012618 -0.008043 -0.022948 -0.023091 -0.025053 -0.131885 -0.131987 -0.049519 -0.119518 -0.015617 -0.095708
MP4=FULL   -0.011797     -0.022055       -0.134885     -0.014440 -0.095643
B2PLYP=FULL -0.000320 -0.003696 -0.003696 -0.002357 -0.006709 -0.006750 -0.007312 -0.037232 -0.037263 -0.014251 -0.033782 -0.004549 -0.027496
Coupled Cluster CCSD=FULL         -0.013924           -0.122595 -0.014187 -0.095467
CCSD(T)=FULL         -0.021934           -0.123191 -0.014356 -0.102614
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) TZVP cc-pVDZ cc-pVTZ