$y_2$ ($y_3$) satisfying correct neutrino oscillation data. In figure \[fig:ihapba\], left panel shows allowed points in the $\alpha$ - $\phi_{ba}$ plane whereas the right panel shows the predictions for the two Majorana phases $\alpha_{21}$ and $\alpha_{31}$ for inverted neutrino mass hierarchy. Finally in figure \[fig:ihmass\] we show the predictions for absolute neutrino masses (left panel) and $m_{\beta\beta}$ as a function of lightest neutrino mass $m_3$. Interestingly, for values $y_{1,2,3}\leq 1$, we find that the predictions for the effective neutrino mass parameter $m_{\beta\beta}$ mostly fall outside of the standard allowed regions (shown as grey coloured band) for inverted hierarchy. This makes the inverted hierarchy in the current scenario less favourable compared to the normal hierarchy. However, such conclusions are based on the very specific Planck suppressed corrections we have considered in our analysis and they will change if more corrections are included. However, the essence of the set-up is that the correct light neutrino phenomenology can be obtained for different subsets of the entire parameter space.

$$\includegraphics[height=5.5cm]{ihm3mall.pdf}
\includegraphics[height=5.5cm]{ihn0bb.png}$$

It should be noted that the Planck scale suppressed corrections crucially depend upon the ratio $u/M_{\rm Pl}$ up to some Yukawa couplings. In the absence of any fine tuning of Yukawa couplings, all 