  In this work we analyze the corrections to tribimaximal (TBM), bimaximal (BM)
and democratic (DC) mixing matrices for explaining large reactor mixing angle
$\theta_{13}$ and checking the consistency with other neutrino mixing angles.
The corrections are parameterized in terms of small orthogonal rotations (R)
with corresponding modified PMNS matrix of the form $R_{ij}\cdot U \cdot
R_{kl}$ where $R_{ij}$ is rotation in ij sector and U is any one of these
special matrices. We showed the rotations $R_{13}\cdot U \cdot R_{23}$,
$R_{12}\cdot U \cdot R_{13}$ for BM and $R_{13}\cdot U \cdot R_{13}$ for TBM
perturbative case successfully fit all neutrino mixing angles within $1\sigma$
range. The perturbed PMNS matrix $R_{12}\cdot U \cdot R_{13}$ for DC, TBM and
$R_{23}\cdot U \cdot R_{23}$ for TBM case is successful in producing mixing
angles at 2$\sigma$ level. The other rotation schemes are either excluded or
successful in producing mixing angles at $3\sigma$ level.
