matrix{
ccol{ {} above {roman "0"} above {roman "1"} above {roman "2"} above {roman "3"} above {roman "4"} above {roman "5"} above {roman "6"} above {roman "7"} above {roman "8"} above {roman "9"} above {roman "A"} above {roman "B"} above {roman "C"} above {roman "D"} above {roman "E"} above {roman "F"} }
ccol{ {roman "244"} above \[u2440] above \[u2441] above \[u2442] above \[u2443] above \[u2444] above \[u2445] above \[u2446] above \[u2447] above \[u2448] above \[u2449] above \[u244A] above @ above @ above @ above @ above @ }
ccol{ {roman "245"} above @ above @ above @ above @ above @ above @ above @ above @ above @ above @ above @ above @ above @ above @ above @ above @ }
}