${\mathcal{G}}_{21}$ $\mathfrak{L}\left(0,2\right),\mathfrak{L}\left(2,0\right),\mathfrak{L}\left(2,2\right),\mathfrak{L}\left(2,4\right),\mathfrak{L}\left(2,6\right),\mathfrak{L}\left(2,8\right),\mathfrak{L}\left(2,10\right),\mathfrak{L}\left(2,12\right),\mathfrak{L}\left(2,14\right),$ $\mathfrak{L}\left(2,16\right),\mathfrak{L}\left(2,18\right),\mathfrak{L}\left(2,20\right),\mathfrak{L}\left(2,22\right),\mathfrak{L}\left(2,24\right),\mathfrak{L}\left(2,26\right),\mathfrak{L}\left(2,28\right),\mathfrak{L}\left(2,30\right),\mathfrak{L}\left(2,32\right),$ $\mathfrak{L}\left(2,34\right),\mathfrak{L}\left(2,36\right),\mathfrak{L}\left(2,38\right),\mathfrak{L}\left(2,40\right),\mathfrak{L}\left(6,2\right),\mathfrak{L}\left(6,4\right),\mathfrak{L}\left(6,8\right),\mathfrak{L}\left(6,10\right),\mathfrak{L}\left(6,14\right),$ $\mathfrak{L}\left(6,20\right),\mathfrak{L}\left(6,26\right),\mathfrak{L}\left(14,2\right),\mathfrak{L}\left(14,4\right),\mathfrak{L}\left(14,6\right).$ ${\mathcal{G}}_{14}$ $\mathfrak{L}\left(0,3\right),\mathfrak{L}\left(3,0\right),\mathfrak{L}\left(3,3\right),\mathfrak{L}\left(3,6\right),\mathfrak{L}\left(3,9\right),\mathfrak{L}\left(3,12\right),\mathfrak{L}\left(3,15\right),\mathfrak{L}\left(3,18\right),\mathfrak{L}\left(3,21\right),$ $\mathfrak{L}\left(3,24\right),\mathfrak{L}\left(3,27\right),\mathfrak{L}\left(3,30\right),\mathfrak{L}\left(3,33\right),\mathfrak{L}\left(3,36\right),\mathfrak{L}\left(3,39\right),\mathfrak{L}\left(6,3\right),\mathfrak{L}\left(6,9\right),\mathfrak{L}\left(6,15\right),$ $\mathfrak{L}\left(6,21\right),\mathfrak{L}\left(6,27\right),\mathfrak{L}\left(6,33\right),\mathfrak{L}\left(6,39\right),\mathfrak{L}\left(21,3\right),\mathfrak{L}\left(21,6\right).$ ${\mathcal{G}}_{6}$ $\mathfrak{L}\left(0,7\right),\mathfrak{L}\left(7,0\right),\mathfrak{L}\left(7,7\right),\mathfrak{L}\left(7,14\right),\mathfrak{L}\left(7,21\right),\mathfrak{L}\left(7,28\right),\mathfrak{L}\left(7,35\right),\mathfrak{L}\left(14,7\right),\mathfrak{L}\left(14,21\right).$ ${\mathcal{G}}_{6}$ $\mathfrak{L}\left(14,35\right),\mathfrak{L}\left(21,7\right),\mathfrak{L}\left(21,14\right).$ ${\mathcal{G}}_{7}$ $\mathfrak{L}\left(0,6\right),\mathfrak{L}\left(6,0\right),\mathfrak{L}\left(6,6\right),\mathfrak{L}\left(6,12\right),\mathfrak{L}\left(6,18\right),\mathfrak{L}\left(6,24\right),\mathfrak{L}\left(6,30\right),\mathfrak{L}\left(6,36\right).$ ${\mathcal{G}}_{3}$ $\mathfrak{L}\left(0,14\right),\mathfrak{L}\left(14,0\right),\mathfrak{L}\left(14,14\right),\mathfrak{L}\left(14,28\right).$ ${\mathcal{G}}_{2}$ $\mathfrak{L}\left(0,21\right),\mathfrak{L}\left(21,0\right),\mathfrak{L}\left(21,21\right).$ ${\mathcal{G}}_{1}$ $\mathfrak{L}\left(0,0\right).$