4       @ @ @                 @ @ @
4     @ @3\4@3/4@ @             @ @3\4@3/4@ @           
3     \4@3|4@3|4@3|4@3/             \4@3|4@3|4@3|4@3/
3      \\\|///               \\\|///
3       \\|//                 \\|//
3        \|/                   \|/                    
13        =&=                   =&=     
3        /|\                   /|\