I created a practice sheet -but is each part correct?

[artistnatural]

Hello,

I created a practice sheet for myself so basic sentence starters would be quick and automatic for me. Could someone look it over for correctness??? If someone is so kind to do that, please refer to each error by it's line number.

Thank you people for each comment

55

to send

enviar

55

56

I send it

Lo envio

56

57

I used to send it/was sending it

Lo enviaba

57

I was sending it

Lo estaba enviando

58

I sent it

Lo envié

58

59

I have sent it

Lo he enviado

59

60

I had sent it

Lo había enviado

60

61

I have been sending it

He estado/sido enviandolo

61

62

I had been sending it

Había estado/sido enviando

62

63

I will send it

Lo enviaré

63

64

I will have sent it

Lo habréenviado

64

65

I will had sent it

???

65

66

I would send it

Lo enviaría

66

67

I could send it

Podria enviarlo

67

68

I should send it

Debería enviarlo

68

69

I would be sending it

Estaría enviandolo

69

70

I could be sending it

Podría enviandolo

70

71

I should be sending it

Debería estar enviandolo

71

72

I would have sent it

Lo habría enviado

72

73

I would had sent it

Lo había enviado

73

74

I could have sent it

Lo podía haber enviado

74

75

I should have sent it

Lo debería enviado

75

76

I would have been sending it

??? Habría estado/sido enviandolo

76

77

I would had been sending it

??? Había estado/sido enviandolo

77

78

I could have been sending it

Podía estado/sido enviandolo

78

79

I should have been sending it

Debería estado/sido enviandolo

79