2
<!DOCTYPE html><html><body><xyz:abc></xyz:abc>
12
<!DOCTYPE html><html><body><xyz:abc></xyz:abc><span></span>
23
<!DOCTYPE html><html><html abc:def=gh><xyz:abc></xyz:abc>
25
15: Unexpected start tag html
35
<!DOCTYPE html><html xml:lang=bar><html xml:lang=foo>
37
15: Unexpected start tag html
46
<!DOCTYPE html><html 123=456>
56
<!DOCTYPE html><html 123=456><html 789=012>
67
<!DOCTYPE html><html><body 789=012>