```python
#!/usr/bin/env python3
import sys

def main():
    flags = set()
    
    # Parse flags from command line arguments
    for arg in sys.argv[1:]:
        if arg.startswith('-'):
            for char in arg[1:]:
                if char in 'wlc':
                    flags.add(char)
    
    # If no flags specified, default to all
    if not flags:
        flags = {'w', 'l', 'c'}
    
    # Read from stdin
    text = sys.stdin.read()
    
    results = []
    
    # Process flags in order: l, w, c
    for flag in ['l', 'w', 'c']:
        if flag in flags:
            if flag == 'l':
                # Line count
                count = len(text.splitlines()) if text else 0
            elif flag == 'w':
                # Word count
                count = len(text.split())
            elif flag == 'c':
                # Character count
                count = len(text)
            results.append(str(count))
    
    print(' '.join(results))

if __name__ == '__main__':
    main()
```