┌──────────┐       1) 1000 FIELD-GROUP 1                             1000 FILL-IN 1 i
│         i│                                                         1002 LITERAL ----------
│──────────│       2) 1004 FIELD-GROUP 2  1000:visible:yes           1000 FILL-IN 1 i
│         9│                                                         1004 FILL-IN 2 i
│          │                                                         1002 LITERAL ----------
└──────────┘
                   3) 1006 FIELD-GROUP 3  1004:visible:yes           1000 FILL-IN  i
                                                                     1004 FILL-IN  i
                                                                     1006 FILL-IN 3 i
                                                                     1002 LITERAL ----------
                   4) 1000 FIELD-GROUP 4  1006:visible:yes           1000 FILL-IN 4 i
                                                                     1004 FILL-IN  i
                                                                     1006 FILL-IN 3 i
                                                                     1002 LITERAL ----------

                   5) 1004 FIELD-GROUP 5  1000:visible:yes           1000 FILL-IN  i
                                                                     1004 FILL-IN 5 i
                                                                     1006 FILL-IN  i
                                                                     1002 LITERAL ----------
                   6) 1006 FIELD-GROUP 6  1004:visible:yes           1000 FILL-IN  i
                                                                     1004 FILL-IN 5 i
                                                                     1006 FILL-IN 6 i
                                                                     1002 LITERAL ----------

                   7) 1000 FIELD-GROUP 7  1006:visible:yes           1000 FILL-IN 7 i
                                                                     1004 FILL-IN  i
                                                                     1006 FILL-IN  i
                                                                     1002 LITERAL ----------
                   8) 1004 FIELD-GROUP 8  1000:visible:yes           1000 FILL-IN 7 i
                                                                     1004 FILL-IN 8 i
                                                                     1006 FILL-IN  i
                                                                     1002 LITERAL ----------

                   9) 1006 FIELD-GROUP 9  1004:visible:yes           1000 FILL-IN  i
                                                                     1004 FILL-IN  i
                                                                     1006 FILL-IN 9 i
                                                                     1002 LITERAL ----------