import numpy as np
bank=['A','C','G','T']
output=[]
for i in range(4):
	for j in range(4):
		for k in range(4):
			for l in range(4):
				output.append(bank[i]+bank[j]+bank[k]+bank[l])
ofile=open('/home/scottn/fourmerlist.txt', 'w+')
for x in output:
	ofile.write(str(x)+'\n')
ofile.close()