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labelled with the set of quantum numbers J , j ,Ω, v$_{t}$ , v$_{d}$ ,Γ. In agreement with Ref. [10], we found four vibrational energies levels of the A ′ 1 irrep and one other level of the A ′ 2 irrep . We also found four more vibrational levels of the A ′ 2 irrep . Although their energies are located above the v$_{d}$ = 0 , j = 0 dissociation threshold, they are stable because they cannot dissociate due to the symmetry restriction. Their binding energies are given in the table 

