\documentclass[a4paper,10pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{pdfpages}
\usepackage{latexsym}
\usepackage{amssymb,amsthm,amsmath}

\begin{document}
 \newcommand{\nxt}{{\ensuremath\raisebox{0.25ex}{\text{\scriptsize$\bigcirc$}}}}
\newcommand{\Rdiamond}{\Diamond_{\!F}}
\newcommand{\Rbox}{\Box_{\!F}}
\newcommand{\Rnext}{\nxt_{\!F}}
\newcommand{\Ldiamond}{\Diamond_{\!P}}
\newcommand{\Lbox}{\Box_{\!P}}
\newcommand{\Lnext}{\nxt_{\!P}}
\newcommand{\SVdiamond}{\mathop{\ooalign{$\Diamond$ \cr \kern0.5ex
    \raisebox{0.35ex}{\scalebox{0.7}{$*$}}} \kern-0.9ex}}
\newcommand{\SVbox}{\mathop{\ooalign{$\Box$ \cr \kern0.42ex
    \raisebox{0.3ex}{\scalebox{0.7}{$*$}}} \kern-0.9ex}}


 $\{$\\ 
$Adult \sqsubseteq  \Ldiamond Minor$\\ 
 $\}$ 
\end{document}