Acronym n/d,m/b-dip
Name n/d-gram - m/b-gram duoprism
Circumradius sqrt[1/(4 sin2(π d/n))+1/(4 sin2(π b/m))]
Face vector nm, 2nm, nm+n+m, n+m
Especially n,m-dip (d=b=1)   n,n-dip (m=n, d=b=1)   2n,m-dip (d=b=1)   2n,2m-dip (d=b=1)   4,m-dip (n=4, d=b=1)   4,2m-dip (n=4, d=b=1)  
n/d,2n/d-dip (m=2n, b=d)   4,m/b-dip (n=4, d=1)   4,2m/b-dip (n=4, d=1)  
3/1 or 3/2 4/1 or 4/3 5/1 or 5/4 5/2 or 5/3 6/1 or 6/5 8/1 or 8/7 8/3 or 8/5 10/1 or 10/9 10/3 or 10/7 12/1 or 12/11 {n/d} x {m/b}
triddip tisdip trapedip tistadip thiddip todip tistodip tradedip tistadedip titwadip 3/1 or 3/2
  tes squipdip sistadip shiddip sodip sistodip squadedip sistadedip sitwadip 4/1 or 4/3
    pedip starpedip phiddip podip pistodip padedip pistadedip pitwadip 5/1 or 5/4
      stardip stahdip starodip stastodip stardedip stastidedip statwadip 5/2 or 5/3
        hiddip hodip histodip hadedip histadedip hitwadip 6/1 or 6/5
          odip ostodip odedip ostadedip otwadip 8/1 or 8/7
            stodip stodedip stostidedip stotwadip 8/3 or 8/5
              dedip distadedip datwadip 10/1 or 10/9
                stadidip staditwadip 10/3 or 10/7
                  twaddip 12/1 or 12/11
Confer
general polytopal classes:
Wythoffian polychora   noble polytopes (for n/d = m/b only)  
External
links 		hedrondude   wikipedia

Incidence matrix according to Dynkin symbol

xn/do xm/bo   (n>2, m>2, n/2>d>1, m/2>b>1)

.   . .   . | nm |  2  2 | 1  4 1 | 2 2
------------+----+-------+--------+----
x   . .   . |  2 | nm  * | 1  2 0 | 2 1
.   . x   . |  2 |  * nm | 0  2 1 | 1 2
------------+----+-------+--------+----
xn/do .   . |  n |  n  0 | m  * * | 2 0
x   . x   . |  4 |  2  2 | * nm * | 1 1
.   . xm/bo |  m |  0  m | *  * n | 0 2
------------+----+-------+--------+----
xn/do x   . ♦ 2n | 2n  n | 2  n 0 | m *
x   . xm/bo ♦ 2m |  m 2m | 0  m 2 | * n

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