Dominion #62
Color the gray cells of the grid black or white. The black cells must form dominoes (exactly two orthogonally connected cells), which must not touch each other orthogonally; diagonal touching is allowed and necessary. Cells with letters must not be blackened. The black cells divide the grid into orthogonally contiguous areas of white cells.
The same letters must belong to the same white area; different letters must not belong to the same area. There must be no white areas without a letter cell.