there is a: 0x0 1x1 2x2 3x3 4x4 5x5 6x6 7x7 8x8 9x9 10x10 11x11 12x12 13x13 14x14 15x15 16x16 17x17 18x18 19x19 20x10 21x21 22x22 23x23 24x24 25x25 26x26 27x27 28x28 29x29 30x30 31x31 32x32 33x33 34x34 35x35 36x36 37x37 38x38 39x39 40x40 41x41 42x42 43x43 44x44 45x45 46x46 47x47 48x48 49x49 50x50 51x51 52x52 53x53 54x54 55x55 56x56 57x57 58x58 59x59 60x60 61x61 62x62 63x63 64x64 65x65 66x66 67x67 68x68 69x69 70x70 71x71 72x72 73x73 74x74 75x75 76x76 77x77 78x78 79x79 80x80 90x90 100x100