BEGIN{

cn=1

str1="2345"
str2="Ab123"

# 1
print "No. " cn++
if(str1~/2345/){print "T"}else{print "F"}
print ""

# 2
print "No. " cn++
if(str1~/234/){print "T"}else{print "F"}
print ""

# 3
print "No. " cn++
if(str1~/235/){print "T"}else{print "F"}
print ""

# 4
print "No. " cn++
if(str1~/[0-9]/){print "T"}else{print "F"}
print ""

# 5
print "No. " cn++
if(str1~/[a-z]/){print "T"}else{print "F"}
print ""

# 6
print "No. " cn++
if(str1~/[^0-9]/){print "T"}else{print "F"}
print ""

# 7
print "No. " cn++
if(str2~/[0-9]/){print "T"}else{print "F"}
print ""

# 8
print "No. " cn++
if(str2~/[^0-9]/){print "T"}else{print "F"}
print ""

}

No. 1
T

No. 2
T

No. 3
F

No. 4
T

No. 5
F

No. 6
F

No. 7
T

No. 8
T