cat inputfile
0, 0, 0, 56, 11
1, 524, 3, 6, 74
1, 624, 0, 43, 33
2, 72, 0, 43, 80
3, 26, 3, 6, 86
4, 323, 3, 1459, 95
5, 325, 3, 1459, 33
6, 225, 3, 1436, 57
7, 225, 3, 1436, 86
8, 225, 3, 1436, 57
9, 225, 3, 1436, 95
10, 225, 3, 1436, 33
11, 524, 3, 6, 86
12, 624, 0, 43, 95
14, 72, 0, 43, 33
15, 72, 0, 43, 11
16, 72, 0, 43, 74
17, 225, 3, 1436, 33
18, 225, 3, 1436, 11
19, 225, 3, 1436, 74
20, 225, 3, 1436, 33

awk 'BEGIN{print "Sequence Found|Occurrences";OFS="|"}
{a[NR]=$5;nr=NR}
{for(i=1;i<=nr-2;i++) S[i]=a[i]"-"a[i+1]"-"a[i+2]}
{for(j=1;j<=nr-2;j++) $1=sprintf("%s", S[j]);c[$1]++}
END{for (m in c) if(m~/-/) print m,c[m]}' inputfile
Sequence Found|Occurrences
33-86-95|1
57-95-33|1
74-33-80|1
33-11-74|2
57-86-57|1
95-33-57|1
80-86-95|1
95-33-86|1
86-57-95|1
95-33-11|1
74-33-11|1
86-95-33|2
11-74-33|3
33-57-86|1
33-80-86|1

awk 'BEGIN{print "Sequence Found|Occurrences";OFS="|"}
{a[NR]=$5;nr=NR}
{for(i=1;i<=nr-2;i++) S[i]=a[i]"-"a[i+1]"-"a[i+2]}
{for(j=1;j<=nr-2;j++) $1=sprintf("%s", S[j]);c[$1]++}
END{for (m in c) if(m~/-/ && c[m]>1) print m,c[m]}' inputfile
Sequence Found|Occurrences
33-11-74|2
86-95-33|2
11-74-33|3