"Asm.fif" include
<{ NEWDICT SWAP REPEAT:
   s2 XCHG0 NEWC 16 STU s2 XCHG0
   16 INT DICTISETB }>s
dup csr. constant mkdict(16,16).code
{ mkdict(16,16).code runvmcode abort"cannot create 16->16 dictionary" } : mkdict(16,16)

<{ ZERO WHILE:<{ SWAP 16 INT DICTIREMMAX }>DO<{ // n d' x i
     SWAP 16 LDU ENDS  // n d' i s
     2SWAP SWAP INC
   }> DROP
}>s dup csr. constant explode_dict(16,16).code
{ explode_dict(16,16).code runvmcode abort"cannot explode 16->16 dictionary" } : xdict(16,16)
{ xdict(16,16) ."{ " { swap . ."-> " . ."; " } swap times ."}" cr } : .dict(16,16)
{ xdict(16,16) { dup 0< not { ."+" } if ._ 64 + emit } swap times space } : .v
169 13 
239 dup dup * swap
289 17 
3
mkdict(16,16) constant dict

{ 16 { 16 i@+ s> 1+ 16 i, true } dictmap } : dict:1+
{ 16 { 16 i@+ s> swap 16 i@+ s> + 16 i, true } dictmerge } : dict:+

dict dict:1+ dup <s csr. constant dict2

dict .dict(16,16)
dict2 .dict(16,16)

10 13  20 20  2 mkdict(16,16) constant dict3

0 mkdict(16,16) constant dict0
169 13  1 mkdict(16,16) constant dict1a
100 10  1 mkdict(16,16) constant dict1b


dict dict3
2dup swap <s csr. <s csr. dict:+ dup <s csr. .dict(16,16)

{ 1 mkdict(16,16) } : cst*
{ 1 cst* } : A*
{ 2 cst* } : B*
{ 3 cst* } : C*
{ 4 cst* } : D*
{ 5 cst* } : E*
{ 6 cst* } : F*
' dict:+ : v+
2 A* 3 C* v+ 9 F* v+
1 A* 6 D* v+ 2 E* v+
over .v cr dup .v cr
v+ .v cr