Minor intervals are the 2nd, 3rd, 6th & 7th degrees, but a semitone smaller than their respective major interval.
Minor 2nd (m2)
P1
m2
M2
m3
M3
P4
d5
P5
m6
M6
m7
M7
P8
Minor 3rd (m3)
P1
m2
M2
m3
M3
P4
d5
P5
m6
M6
m7
M7
P8
Minor 6th (m6)
P1
m2
M2
m3
M3
P4
d5
P5
m6
M6
m7
M7
P8
Minor 7th (m7)
P1
m2
M2
m3
M3
P4
d5
P5
m6
M6
m7
M7
P8