*	1:      null
	1.:     null
	1.1:    null
	1.1e:   null
	1.1e1:  null
	1.e1:   null
	1e1:    null
	1e:     null

*	+1:      null
	+1.:     null
	+1.1:    null
	+1.1e:   null
	+1.1e1:  null
	+1.e1:   null
	+1e1:    null
	+1e:     null

*	-1:      null
	-1.:     null
	-1.1:    null
	-1.1e:   null
	-1.1e1:  null
	-1.e1:   null
	-1e1:    null
	-1e:     null

*	1.1e+:   null
	1.1e+1:  null
	1.e+1:   null
	1e+1:    null
	1e+:     null

*	+1.1e+:   null
	+1.1e+1:  null
	+1.e+1:   null
	+1e+1:    null
	+1e+:     null

*	-1.1e+:   null
	-1.1e+1:  null
	-1.e+1:   null
	-1e+1:    null
	-1e+:     null
