Conjugation of the verb lack

Indicative
Present
Ilack
youlack
he/she/itlacks
welack
youlack
theylack
Present Progressive
Iam lacking
youare lacking
he/she/itis lacking
weare lacking
youare lacking
theyare lacking
Past
Ilacked
youlacked
he/she/itlacked
welacked
youlacked
theylacked
Past Progressive
Iwas lacking
youwere lacking
he/she/itwas lacking
wewere lacking
youwere lacking
theywere lacking
Perfect
Ihave lacked
youhave lacked
he/she/ithas lacked
wehave lacked
youhave lacked
theyhave lacked
Perfect Progressive
Ihave been lacking
youhave been lacking
he/she/ithas been lacking
wehave been lacking
youhave been lacking
theyhave been lacking
Pluperfect I
Ihad lacked
youhad lacked
he/she/ithad lacked
wehad lacked
youhad lacked
theyhad lacked
Pluperfect II
Ihad lacked
youhad lacked
he/she/ithad lacked
wehad lacked
youhad lacked
theyhad lacked
Future I
Iwill lack
youwill lack
he/she/itwill lack
wewill lack
youwill lack
theywill lack
Future II
Iam going to lack
youare going to lack
he/she/itis going to lack
weare going to lack
youare going to lack
theyare going to lack
Future Progressive
Iwill be lacking
youwill be lacking
he/she/itwill be lacking
wewill be lacking
youwill be lacking
theywill be lacking
Future Perfect
Iwill have lacked
youwill have lacked
he/she/itwill have lacked
wewill have lacked
youwill have lacked
theywill have lacked
Conditional
Present
Iwould lack
youwould lack
he/she/itwould lack
wewould lack
youwould lack
theywould lack
Progressive
Iwould be lacking
youwould be lacking
he/she/itwould be lacking
wewould be lacking
youwould be lacking
theywould be lacking
Past Progressive
Iwould have been lacking
youwould have been lacking
he/she/itwould have been lacking
wewould have been lacking
youwould have been lacking
theywould have been lacking
Subjunctive
Present
Ilack
youlack
he/she/itlacks
welack
youlack
theylack
Present Perfect
Ihave lacked
youhave lacked
he/she/ithas lacked
wehave lacked
youhave lacked
theyhave lacked
Past
Ilacked
youlacked
he/she/itlacked
welacked
youlacked
theylacked
Pluperfect I
Ihad lacked
youhad lacked
he/she/ithad lacked
wehad lacked
youhad lacked
theyhad lacked
Past
Ilacked
youlacked
he/she/itlacked
welacked
youlacked
theylacked
Pluperfect II
Ihad lacked
youhad lacked
he/she/ithad lacked
wehad lacked
youhad lacked
theyhad lacked
Imperative
Imperative
youlack
he/she/itlack
welet us lack
youlack
theylack
Negative Imperative
youdo not lack
he/she/itdo not lack
welet us not lack
youdo not lack
theydo not lack