let's suppose this is my data
0.344828497			0.344828497
0.650764559	1.09085343	0.124328135	0.98550043

0.310340121	0.757023247	1.15704371	0.214124805

0.613531653	0.90303827	0.250961574	0.214124805

	        0.613531653     0.454175893      0.028569152

	        0.50589093		        0.056583528

i want...
0.650764559	1.09085343	0.124328135	0.98550043

0.310340121	0.757023247	1.15704371	0.214124805

0.613531653	0.90303827	0.250961574	0.214124805

but the o/p was somehowe like in this formate

0.344828497			0.344828497

0.650764559	1.09085343	0.124328135	0.98550043

0.613531653	0.90303827	0.250961574	0.214124805

	        0.613531653     0.454175893      0.028569152