Help making rule/mask

[bsam277]

Hi, I am new to hashcat and try as I may I can not figure out how to construct a specific rule. Could anyone tell me how to set hashcat to try a 16 digit password composed of only uppercase letters and numbers in random order? Thanks.

[vrposter]

would be -1 ?u?d ?1?1?1?1?1?1?1?1?1?1?1?1?1?1?1?1

but do the math (26+10)^16 keyspace