@HD	VN:1.6	SO:coordinate
@SQ	SN:z	LN:13
@CO	
@CO	Copyright (c) 2018 Genome Research Ltd.
@CO	
@CO	Permission is hereby granted, free of charge, to any person obtaining
@CO	a copy of this software and associated documentation files (the
@CO	"Software"), to deal in the Software without restriction, including
@CO	without limitation the rights to use, copy, modify, merge, publish,
@CO	distribute, sublicense, and/or sell copies of the Software, and to
@CO	permit persons to whom the Software is furnished to do so, subject
@CO	to the following conditions:
@CO	
@CO	The above copyright notice and this permission notice shall be included
@CO	in all copies or substantial portions of the Software.
@CO	
@CO	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
@CO	OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
@CO	MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
@CO	IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
@CO	CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
@CO	TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
@CO	SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
@CO	
@CO	Various I combinations
@CO	Starting with I isn't handled due to the pileup ordering.
@CO	The record only appears in the pileup list when the first base
@CO	is placed against the reference, which is too late.
@CO	
@CO	                  1
@CO	    1  2345   6789012  3 Depadded base numbering
@CO	ref T  AGCT   TAGCAGG  T
@CO	
@CO	s1     AGCT   TAGCAGG    11M
@CO	s2     AGCTCCCTAGCAGG    4M 3I 7M
@CO	s3   A=AGCT   TAGCAGG=A  2I 11M 2I
@CO	     AB0123ABC4567890CD
@CO	
s1	0	z	2	0	11M	*	0	0	AGCTTAGCAGG	01234567890
s2	0	z	2	0	4M3I7M	*	0	0	AGCTCCCTAGCAGG	0123ABC4567890
s2	0	z	2	0	2I11M2I	*	0	0	A=AGCTTAGCAGG=A	AB01234567890CD
