volatile uint16_t well[22] = {
    0, 0,
    0x10, 0x1C00, 0x0800, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0x224, 0x237, 0x23F, 0x27F
};

volatile uint16_t well_horz[22] = { // --
    0, 0,
    0, 0, 0x0800, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0x200, 0x224, 0x227, 0x210,
};

volatile uint16_t well_vert[22] = { // |
    0, 0,
    0, 0x0C00, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0x11, 0x5, 0x37
};