#!/usr/bin/awk -f
# awk program to reformat input into 4 equal-length tab-separated columns
	{ line[NR] = $0 }
END	{ rows = int (NR / 4)
	rem = NR % 4
	c2 = rows ; c3 = (rows * 2) ; c4 = (rows * 3)
	if (rem)	{ c2 += 1 ; c3 += 1 ; c4 += 1 }
	if (rem > 1)	{ c3 += 1 ; c4 += 1 }
	if (rem > 2)	{ c4 += 1 }
	for (i = 1 ; i <= rows ; i++ ) { printf ( "%s\t%s\t%s\t%s\n", line[i], line [i + c2], line [i + c3], line [i + c4])}
	if (rem)	{ printf ( "%s", line [rows + 1]) }
	if (rem > 1)	{ printf ( "\t%s", line [rows + 1 + c2]) }
	if (rem > 2)	{ printf ( "\t%s", line [rows + 1 + c3]) }
	if (rem)	{ printf ( "\n") }}