       (1:0) let a                    <--         (1:0) let a
             ^                                          ^

       (1:4) let a = `                <--         (1:4) let a = `
                 ^                                          ^

       (1:5) et a = `a                <--         (1:5) et a = `a
                 ^                                          ^

       (1:8) a = `a${b                <--         (1:8) a = `a${b
                 ^                                          ^

      (1:12) `a${b}c`;                <--        (1:12) `a${b}c`;
                 ^                                          ^

      (1:13) a${b}c`;                 <--        (1:13) a${b}c`;
                 ^                                          ^

      (1:16) b}c`;                    <--        (1:16) b}c`;
                 ^                                          ^
