\documentclass[11pt,a4paper]{article} %\usepackage[left=2cm,right=2cm,top=2cm,bottom=2cm]{geometry} %\documentclass[margin=3mm]{standalone} \usepackage[T1]{fontenc} \usepackage{mathtools} \usepackage{tikz-cd} \tikzcdset{arrow style=tikz, diagrams={>=Straight Barb}, nodes={text depth=0.25ex} } \begin{document} \begin{tikzcd}[column sep=tiny] & |[draw]| 1,5 \ar[ld]\ar[d]\ar[rd] & \\ |[draw]| -5,-1,0 & |[draw]| 2 & |[draw]| 6,7,12 \end{tikzcd} \begin{tikzcd}\ar[r,"\text{insert 3}",Rightarrow]&~\end{tikzcd} \begin{tikzcd}[column sep=tiny] & |[draw]| 1,5 \ar[ld]\ar[d]\ar[rd] & \\ |[draw]| -5,-1,0 & |[draw]| 2,3 & |[draw]| 6,7,12 \end{tikzcd} \bigskip \begin{tikzcd}[column sep=tiny] & |[draw]| 1,5 \ar[ld]\ar[d]\ar[rd] & \\ |[draw]| -5,-1,0 & |[draw]| 2 & |[draw]| 6,7,12 \end{tikzcd} $\xRightarrow{\text{insert 3}}$ \begin{tikzcd}[column sep=tiny] & |[draw]| 1,5 \ar[ld]\ar[d]\ar[rd] & \\ |[draw]| -5,-1,0 

Is this what you like to achieve? Or should be arrow between nodes in botomrow?

\documentclass[11pt,a4paper]{article} \usepackage[T1]{fontenc} \usepackage{mathtools} \usepackage{tikz-cd} \tikzcdset{arrow style=tikz, diagrams={>=Straight Barb}, nodes={text depth=0.25ex} } \begin{document} \begin{tikzcd}[column sep=tiny] & |[draw]| 1,5 \ar[ld]\ar[d]\ar[rd] & \\ |[draw]| -5,-1,0 & |[draw]| 2 & |[draw]| 6,7,12 \end{tikzcd} \begin{tikzcd}\ar[r,"\text{insert 3}",Rightarrow]&~\end{tikzcd} \begin{tikzcd}[column sep=tiny] & |[draw]| 1,5 \ar[ld]\ar[d]\ar[rd] & \\ |[draw]| -5,-1,0 & |[draw]| 2,3 & |[draw]| 6,7,12 \end{tikzcd} \bigskip \begin{tikzcd}[column sep=tiny] & |[draw]| 1,5 \ar[ld]\ar[d]\ar[rd] & \\ |[draw]| -5,-1,0 & |[draw]| 2 & |[draw]| 6,7,12 \end{tikzcd} $\xRightarrow{\text{insert 3}}$ \begin{tikzcd}[column sep=tiny] & |[draw]| 1,5 \ar[ld]\ar[d]\ar[rd] & \\ |[draw]| -5,-1,0 

Is this what you like to achieve? Or should be arrow between nodes in bottom row?

 \documentclass[11pt,a4paper]{article} \usepackage[T1]{fontenc} \usepackage{mathtools} \usepackage{tikz-cd} \tikzcdset{arrow style=tikz, diagrams={>=Straight Barb}, nodes={text depth=0.25ex}, } \begin{document} \begin{tikzcd}[column sep=tiny] & |[draw]| 1,5 \ar[ld]\ar[d]\ar[rd] & \\ |[draw]| -5,-1,0 & |[draw]| 2 & |[draw]| 6,7,12 \end{tikzcd} \begin{tikzcd} & \\[5ex] \ar[r,"\text{insert 3}",Rightarrow]&~\end{tikzcd} \begin{tikzcd}[column sep=tiny] & |[draw]| 1,5 \ar[ld]\ar[d]\ar[rd] & \\ |[draw]| -5,-1,0 & |[draw]| 2,3 & |[draw]| 6,7,12 \end{tikzcd} \bigskip \begin{tikzcd}[column sep=tiny,baseline={([yshift=1ex]current bounding box.south)}] & |[draw]| 1,5 \ar[ld]\ar[d]\ar[rd] & \\ |[draw]| -5,-1,0 & |[draw]| 2 & |[draw]| 6,7,12 \end{tikzcd} $\xRightarrow{\text{insert 3}}$ \begin{tikzcd}[column sep=tiny,baseline={([yshift=1ex]current bounding box.south)}] & |[draw]| 1,5 \ar[ld]\ar[d]\ar[rd] & \\ |[draw]| -5,-1,0 & |[draw]| 2,3 & |[draw]| 6,7,12 \end{tikzcd} \end{document}