file1 = open(r'E:\BMES_y\dev.txt', 'r', encoding='utf-8')
file2 = open(r'E:\BIOES_y\dev.txt', 'w+', encoding='utf-8')
str1=[]
'''
for line in file1.readlines():
    #print(list(line))
    if line!="\n":
        line1 = line.split()
        str2 = line1[0]
        if len(line1) == 5:
            for i in range(1, len(line1)):
                line2 = list(line1[i])
                if line2[0] == "M":
                    line2[0] = "I"
                str3 = ''
                for i in line2:
                    str3 = str3 + i
                str2 = str2 + ' ' + str3
            print(str2)
            str1.append(str2)
    else:
        str1.append(line)
for j in str1:
    file2.write(j)
    file2.write("\n")
'''
for line in file1.readlines():
    #print(list(line))
    if line!="\n":
        line1 = line.split()
        str2 = line1[0]
        for i in range(1, len(line1)):
            line2 = list(line1[i])
            if line2[0] == "M":
                line2[0] = "I"
            str3 = ''
            for i in line2:
                str3 = str3 + i
            str2 = str2 + ' ' + str3
        print(str2)
        str1.append(str2)
    else:
        str1.append(line)
for j in str1:
    file2.write(j)
    file2.write("\n")