graph LR
three[3] --- D{fa:fa-fw}
D --- six1[6]
D --- six2[6]
style three fill: #e3e6e5, stroke:#003831, stroke-width: 2px
style D fill: #e3e6e5, stroke:#003831, stroke-width: 2px
style six1 fill: #e3e6e5, stroke:#003831, stroke-width: 2px
style six2 fill: #e3e6e5, stroke:#003831, stroke-width: 2px