  For almost Mathieu operator
$(H_{\lambda,\alpha,\theta}u)_n=u_{n+1}+u_{n-1}+2\lambda
\cos2\pi(\theta+n\alpha)u_n$, the dry version of Ten Martini problem predicts
that the spectrum $\Sigma_{\lambda,\alpha}$ of $ H_{\lambda,\alpha,\theta}$ has
all gaps open for all $\lambda\neq 0$ and $ \alpha \in \mathbb{R}\backslash
\mathbb{Q}$.
  Avila and Jitomirskaya prove that $\Sigma_{\lambda,\alpha}$ has all gaps open
for Diophantine $\alpha$ and $0<|\lambda|<1$.
  In the present paper, we show that $\Sigma_{\lambda,\alpha}$ has all gaps
open for all $ \alpha \in \mathbb{R}\backslash \mathbb{Q}$ with small
$\lambda$.
