# simple cases
1234
1234-5
1101/2
1109/10
# uncertain
c1230
c.1230
c950
?950
?1289
p1230s
ndcm13C
# before or after
<1255
>1255
<c1255
p>1300
# decades
1260s
e1220s
m1220s
l1220s
# centuries and parts of centuries
12C
m12C
l12C
e13C
em13C
?em13C
em13C
ml15C
cM13C
cm13C
?M12C
2h14C
1h8C
1t15C
2q15C
3q15C
4q15C
cm9C
ce16C
# ranges
1297-1298
1297-98
1297-8
1234-5
1234-50
1250-c1255
1250-<1255
1250-<c.1255
c1200-c1300
c1200xc1300
c1200-<c1300
l12c-e13c
1q15C-l16C
l15C-1q16C
9C-e10C
1234-1267
1234x1267
>1243-<1255
<1255-c1260
p>1255-c1260
# prenotes and postnotes
[perhaps]1205-l13C
[n.d., perhaps]c1345
[no date, possibly]1345-1355
1205[, or later]
# insensitivity to case
cl12C
c.l12C
CL12C
E12c
E1260S
# regnal years
1 Will 1
1 Will I
1 William I
1W I
1 W1
1W 1
1W1
1W2
1 Henry 2
3 Henry IV
3H4
3Hen4
3 William II
3W2
26E3
26Ed3
26Edw3
26 Edward 3
26 Edward III
1R1
3R2
2R3
# no date
nd?1250
n.d.?1250
no date?1250